From ee4cab04b1da9233a971c110610e3d1865ca8103 Mon Sep 17 00:00:00 2001
From: Krzysztof Kotowicz <koto@google.com>
Date: Wed, 11 Mar 2020 14:03:47 +0100
Subject: [PATCH] Added integration with WebIDL + relevant HTML callout.

See heycam/webidl#841.
---
 dist/spec/index.html | 1073 +++++++++++++++++++++++-------------------
 spec/index.bs        |  268 ++++++-----
 2 files changed, 734 insertions(+), 607 deletions(-)

diff --git a/dist/spec/index.html b/dist/spec/index.html
index f16db959..f616e442 100644
--- a/dist/spec/index.html
+++ b/dist/spec/index.html
@@ -1214,7 +1214,7 @@
 </style>
   <meta content="Bikeshed version 0dd2bba6dfda6c3168490a3a3044dd1d0b1ef8e0" name="generator">
   <link href="https://w3c.github.io/webappsec-trusted-types/dist/spec/" rel="canonical">
-  <meta content="959c5512120474e8d8a0342289e59c7a82cc2c63" name="document-revision">
+  <meta content="5d7cce877a282e9d007e915b83d8611f1bef3e0a" name="document-revision">
 <style>/* style-md-lists */
 
 /* This is a weird hack for me not yet following the commonmark spec
@@ -1545,7 +1545,6 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
        <a href="#enforcement-hdr"><span class="secno">2.4</span> <span class="content"><span>Enforcement</span></span></a>
        <ol class="toc">
         <li><a href="#content-security-policy-hdr"><span class="secno">2.4.1</span> <span class="content">Content Security Policy</span></a>
-        <li><a href="#!trustedtypes-extended-attribute"><span class="secno">2.4.2</span> <span class="content">TrustedTypes extended attribute</span></a>
        </ol>
      </ol>
     <li>
@@ -1561,37 +1560,46 @@ <h2 class="no-num no-toc no-ref" id="contents">Table of Contents</h2>
      <a href="#integrations"><span class="secno">4</span> <span class="content">Integrations</span></a>
      <ol class="toc">
       <li>
-       <a href="#integration-with-html"><span class="secno">4.1</span> <span class="content">Integration with HTML</span></a>
+       <a href="#webidl-integration"><span class="secno">4.1</span> <span class="content">Integration with WebIDL</span></a>
        <ol class="toc">
-        <li><a href="#extensions-to-the-window-interface"><span class="secno">4.1.1</span> <span class="content">Extensions to the Window interface</span></a>
-        <li><a href="#extensions-to-the-document-interface"><span class="secno">4.1.2</span> <span class="content">Extensions to the Document interface</span></a>
+        <li><a href="#webidl-string-context-xattr"><span class="secno">4.1.1</span> <span class="content">[StringContext]</span></a>
+        <li><a href="#webidl-applicable-to-types"><span class="secno">4.1.2</span> <span class="content">Extended attributes applicable to types</span></a>
+        <li><a href="#webidl-type-conversion"><span class="secno">4.1.3</span> <span class="content">Type conversion</span></a>
+        <li><a href="#webidl-validate-the-string-in-context"><span class="secno">4.1.4</span> <span class="content">Validate the string in context</span></a>
+       </ol>
+      <li>
+       <a href="#integration-with-html"><span class="secno">4.2</span> <span class="content">Integration with HTML</span></a>
+       <ol class="toc">
+        <li><a href="#extensions-to-the-window-interface"><span class="secno">4.2.1</span> <span class="content">Extensions to the Window interface</span></a>
+        <li><a href="#extensions-to-the-document-interface"><span class="secno">4.2.2</span> <span class="content">Extensions to the Document interface</span></a>
         <li>
-         <a href="#enfocement-in-scripts"><span class="secno">4.1.3</span> <span class="content">Enforcement for scripts</span></a>
+         <a href="#enfocement-in-scripts"><span class="secno">4.2.3</span> <span class="content">Enforcement for scripts</span></a>
          <ol class="toc">
-          <li><a href="#slots-with-trusted-values"><span class="secno">4.1.3.1</span> <span class="content">Slots with trusted values</span></a>
-          <li><a href="#setting-slot-values"><span class="secno">4.1.3.2</span> <span class="content">Setting slot values</span></a>
-          <li><a href="#slot-value-verification"><span class="secno">4.1.3.3</span> <span class="content">Slot value verification</span></a>
+          <li><a href="#slots-with-trusted-values"><span class="secno">4.2.3.1</span> <span class="content">Slots with trusted values</span></a>
+          <li><a href="#setting-slot-values"><span class="secno">4.2.3.2</span> <span class="content">Setting slot values</span></a>
+          <li><a href="#slot-value-verification"><span class="secno">4.2.3.3</span> <span class="content">Slot value verification</span></a>
          </ol>
-        <li><a href="#enforcement-in-sinks"><span class="secno">4.1.4</span> <span class="content">Enforcement in element attributes</span></a>
-        <li><a href="#enforcement-in-timer-functions"><span class="secno">4.1.5</span> <span class="content">Enforcement in timer functions</span></a>
-        <li><a href="#enforcement-in-event-handler-content-attributes"><span class="secno">4.1.6</span> <span class="content">Enforcement in event handler content attributes</span></a>
+        <li><a href="#enforcement-in-sinks"><span class="secno">4.2.4</span> <span class="content">Enforcement in element attributes</span></a>
+        <li><a href="#enforcement-in-timer-functions"><span class="secno">4.2.5</span> <span class="content">Enforcement in timer functions</span></a>
+        <li><a href="#enforcement-in-event-handler-content-attributes"><span class="secno">4.2.6</span> <span class="content">Enforcement in event handler content attributes</span></a>
+        <li><a href="#html-validate-the-string-in-context"><span class="secno">4.2.7</span> <span class="content">Validate the string in context</span></a>
        </ol>
-      <li><a href="#integration-with-svg"><span class="secno">4.2</span> <span class="content">Integration with SVG</span></a>
-      <li><a href="#integration-with-dom"><span class="secno">4.3</span> <span class="content">Integration with DOM</span></a>
-      <li><a href="#integration-with-dom-parsing"><span class="secno">4.4</span> <span class="content">Integration with DOM Parsing</span></a>
+      <li><a href="#integration-with-svg"><span class="secno">4.3</span> <span class="content">Integration with SVG</span></a>
+      <li><a href="#integration-with-dom"><span class="secno">4.4</span> <span class="content">Integration with DOM</span></a>
+      <li><a href="#integration-with-dom-parsing"><span class="secno">4.5</span> <span class="content">Integration with DOM Parsing</span></a>
       <li>
-       <a href="#integration-with-content-security-policy"><span class="secno">4.5</span> <span class="content">Integration with Content Security Policy</span></a>
+       <a href="#integration-with-content-security-policy"><span class="secno">4.6</span> <span class="content">Integration with Content Security Policy</span></a>
        <ol class="toc">
         <li>
-         <a href="#require-trusted-types-for-csp-directive"><span class="secno">4.5.1</span> <span class="content"><span>require-trusted-types-for</span> directive</span></a>
+         <a href="#require-trusted-types-for-csp-directive"><span class="secno">4.6.1</span> <span class="content"><span>require-trusted-types-for</span> directive</span></a>
          <ol class="toc">
-          <li><a href="#require-trusted-types-for-pre-navigation-check"><span class="secno">4.5.1.1</span> <span class="content"><code>require-trusted-types-for</code> Pre-Navigation check</span></a>
+          <li><a href="#require-trusted-types-for-pre-navigation-check"><span class="secno">4.6.1.1</span> <span class="content"><code>require-trusted-types-for</code> Pre-Navigation check</span></a>
          </ol>
-        <li><a href="#trusted-types-csp-directive"><span class="secno">4.5.2</span> <span class="content"><span>trusted-types</span> directive</span></a>
-        <li><a href="#should-block-sink-type-mismatch"><span class="secno">4.5.3</span> <span class="content"><span>Should sink type mismatch violation be blocked by Content Security Policy?</span></span></a>
-        <li><a href="#should-block-create-policy"><span class="secno">4.5.4</span> <span class="content"><span>Should Trusted Type policy creation be blocked by Content Security Policy?</span></span></a>
-        <li><a href="#csp-violation-object-hdr"><span class="secno">4.5.5</span> <span class="content">Violation object changes</span></a>
-        <li><a href="#csp-eval"><span class="secno">4.5.6</span> <span class="content">Support for eval(TrustedScript)</span></a>
+        <li><a href="#trusted-types-csp-directive"><span class="secno">4.6.2</span> <span class="content"><span>trusted-types</span> directive</span></a>
+        <li><a href="#should-block-sink-type-mismatch"><span class="secno">4.6.3</span> <span class="content"><span>Should sink type mismatch violation be blocked by Content Security Policy?</span></span></a>
+        <li><a href="#should-block-create-policy"><span class="secno">4.6.4</span> <span class="content"><span>Should Trusted Type policy creation be blocked by Content Security Policy?</span></span></a>
+        <li><a href="#csp-violation-object-hdr"><span class="secno">4.6.5</span> <span class="content">Violation object changes</span></a>
+        <li><a href="#csp-eval"><span class="secno">4.6.6</span> <span class="content">Support for eval(TrustedScript)</span></a>
        </ol>
      </ol>
     <li>
@@ -1933,7 +1941,7 @@ <h3 class="heading settled" data-level="2.3" id="policies-hdr"><span class="secn
    <h4 class="heading settled" data-level="2.3.1" id="trusted-type-policy-factory"><span class="secno">2.3.1. </span><span class="content"><dfn class="css" data-dfn-type="type" data-export id="typedef-trustedtypepolicyfactory">TrustedTypePolicyFactory<a class="self-link" href="#typedef-trustedtypepolicyfactory"></a></dfn></span><a class="self-link" href="#trusted-type-policy-factory"></a></h4>
    <p>TrustedTypePolicyFactory creates <code class="idl"><a data-link-type="idl" href="#trustedtypepolicy" id="ref-for-trustedtypepolicy③">policies</a></code> and verifies that Trusted Type object instances
 were created via one of the policies.</p>
-   <p class="note" role="note"><span>Note:</span> This factory object is exposed to JavaScript through <code>window.trustedTypes</code> reference - see <a href="#extensions-to-the-window-interface">§ 4.1.1 Extensions to the Window interface</a>.</p>
+   <p class="note" role="note"><span>Note:</span> This factory object is exposed to JavaScript through <code>window.trustedTypes</code> reference - see <a href="#extensions-to-the-window-interface">§ 4.2.1 Extensions to the Window interface</a>.</p>
 <pre class="idl highlight def">[<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#Exposed" id="ref-for-Exposed③"><c- g>Exposed</c-></a>=<c- n>Window</c->, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#SecureContext" id="ref-for-SecureContext③"><c- g>SecureContext</c-></a>] <c- b>interface</c-> <dfn class="dfn-paneled idl-code" data-dfn-type="interface" data-export id="trustedtypepolicyfactory"><code><c- g>TrustedTypePolicyFactory</c-></code></dfn> {
     <a class="n" data-link-type="idl-name" href="#trustedtypepolicy" id="ref-for-trustedtypepolicy④"><c- n>TrustedTypePolicy</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicyfactory-createpolicy" id="ref-for-dom-trustedtypepolicyfactory-createpolicy②"><c- g>createPolicy</c-></a>(
         <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="TrustedTypePolicyFactory/createPolicy(policyName, policyOptions), TrustedTypePolicyFactory/createPolicy(policyName)" data-dfn-type="argument" data-export id="dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyname"><code><c- g>policyName</c-></code><a class="self-link" href="#dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyname"></a></dfn>, <c- b>optional</c-> <a class="n" data-link-type="idl-name" href="#dictdef-trustedtypepolicyoptions" id="ref-for-dictdef-trustedtypepolicyoptions"><c- n>TrustedTypePolicyOptions</c-></a> <dfn class="idl-code" data-dfn-for="TrustedTypePolicyFactory/createPolicy(policyName, policyOptions), TrustedTypePolicyFactory/createPolicy(policyName)" data-dfn-type="argument" data-export id="dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyoptions"><code><c- g>policyOptions</c-></code><a class="self-link" href="#dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyoptions"></a></dfn>);
@@ -2046,8 +2054,8 @@ <h4 class="heading settled" data-level="2.3.1" id="trusted-type-policy-factory">
        <li data-md>
         <p>Let <var>interface</var> be the <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element-interface" id="ref-for-concept-element-interface">element interface</a> for <var>localName</var> and <var>elementNs</var>.</p>
        <li data-md>
-        <p>If <var>interface</var> has an IDL <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute">attribute</a> member which identifier is <var>attribute</var>, and <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes">TrustedTypes</a></code> IDL extended attribute appears on that attribute, return
-stringified <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①">TrustedTypes</a></code>'s identifier and abort futher steps.</p>
+        <p>If <var>interface</var> has an IDL <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute">attribute</a> member which identifier is <var>attribute</var>, and <code class="idl"><a data-link-type="idl">StringContext</a></code> IDL extended attribute appears on that attribute, return
+stringified <code class="idl"><a data-link-type="idl">StringContext</a></code>'s identifier and abort futher steps.</p>
         <p class="note" role="note"><span>Note:</span> This also takes into account all members of <a data-link-type="dfn" href="https://heycam.github.io/webidl/#interface-mixin" id="ref-for-interface-mixin">interface mixins</a> that <var>interface</var> <a data-link-type="dfn" href="https://heycam.github.io/webidl/#include" id="ref-for-include">includes</a>.</p>
        <li data-md>
         <p>Return null.</p>
@@ -2079,8 +2087,8 @@ <h4 class="heading settled" data-level="2.3.1" id="trusted-type-policy-factory">
         <p>If <var>interface</var> does not have an IDL <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute①">attribute</a> that <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/common-dom-interfaces.html#reflect" id="ref-for-reflect">reflects</a> a content attribute with <var>localName</var> <a data-link-type="dfn">local name</a> and <var>attrNs</var> <a data-link-type="dfn">namespace</a>,
 return undefined and abort further steps. Otherwise, let <var>idlAttribute</var> be that IDL <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute②">attribute</a>.</p>
        <li data-md>
-        <p>If <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②">TrustedTypes</a></code> IDL extended attribute appears on <var>idlAttribute</var>, return
-stringified <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes③">TrustedTypes</a></code>'s identifier and abort futher steps.</p>
+        <p>If <code class="idl"><a data-link-type="idl">StringContext</a></code> IDL extended attribute appears on <var>idlAttribute</var>, return
+stringified <code class="idl"><a data-link-type="idl">StringContext</a></code>'s identifier and abort futher steps.</p>
        <li data-md>
         <p>Return null.</p>
       </ol>
@@ -2108,7 +2116,7 @@ <h4 class="heading settled" data-level="2.3.1" id="trusted-type-policy-factory">
      <dd data-md>
       <p>is a <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript③">TrustedScript</a></code> object with its <code>[[Data]]</code> internal slot value set to an empty string.</p>
     </dl>
-    <p class="note" role="note"><span>Note:</span> This object can be used to detect if the runtime environment has <a href="#csp-eval">§ 4.5.6 Support for eval(TrustedScript)</a>. While native Trusted Types implementation can
+    <p class="note" role="note"><span>Note:</span> This object can be used to detect if the runtime environment has <a href="#csp-eval">§ 4.6.6 Support for eval(TrustedScript)</a>. While native Trusted Types implementation can
 support <code>eval(TrustedScript)</code>, it is impossible for a polyfill to  emulate that, as
 eval(TrustedScript) will return its input without unwrapping and evaluating the code.</p>
     <div class="example" id="empty-script-example">
@@ -2272,95 +2280,6 @@ <h4 class="heading settled" data-level="2.4.1" id="content-security-policy-hdr">
 via using the <code class="idl"><a data-link-type="idl">Content-Security-Report-Only</a></code> HTTP Response header.</p>
    <p class="note" role="note"><span>Note:</span> Most of the enforcement rules are defined as modifications of the
 algorithms in other specifications, see <a href="#integrations">§ 4 Integrations</a>.</p>
-   <h4 class="heading settled" data-level="2.4.2" id="!trustedtypes-extended-attribute"><span class="secno">2.4.2. </span><span class="content">TrustedTypes extended attribute</span><a class="self-link" href="#!trustedtypes-extended-attribute"></a></h4>
-   <p class="issue" id="issue-98ce703e"><a class="self-link" href="#issue-98ce703e"></a> Rewrite to mirror https://github.com/heycam/webidl/pull/841.</p>
-   <p class="note" role="note"><span>Note:</span> This section describes the implementation details of the Trusted Types mechanism. IDL extended attributes are not exposed to the JavasScript code.</p>
-   <p>To annotate the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink①⑧">injection sink</a> functions that require Trusted Types, we introduce <dfn class="dfn-paneled idl-code" data-dfn-type="extended-attribute" data-export data-lt="TrustedTypes" data-x="TrustedTypes" id="extendedattrdef-trustedtypes"><code>[TrustedTypes]</code></dfn> IDL <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-extended-attribute" id="ref-for-dfn-extended-attribute">extended attribute</a>. Its presence indicates that the relevant construct is to be supplemented with additional
-Trusted Types enforcement logic.</p>
-   <p>The <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes④">TrustedTypes</a></code> extended attribute <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-xattr-identifier" id="ref-for-dfn-xattr-identifier">takes an identifier</a> as an argument.
-The only valid values for the identifier are <code class="idl"><a data-link-type="idl" href="#trustedhtml" id="ref-for-trustedhtml⑥">TrustedHTML</a></code>, <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript⑤">TrustedScript</a></code>, or <code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl②">TrustedScriptURL</a></code>.
-This extended attribute must not appear on anything other than an <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute③">attribute</a> or an <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-operation" id="ref-for-dfn-operation">operation</a> argument.
-Additionally, it must not appear on <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-read-only" id="ref-for-dfn-read-only">read only</a> attributes.</p>
-   <p>When the extended attribute appears on an attribute, the setter for that attribute must run the following steps in place of the ones specified in its description:</p>
-   <ol>
-    <li data-md>
-     <p>If <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#context-object" id="ref-for-context-object⑤">context object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global①">relevant global object</a> has a <a data-link-type="dfn" href="#window-trusted-type-policy-factory" id="ref-for-window-trusted-type-policy-factory">trusted type policy factory</a>:</p>
-     <p class="issue" id="issue-b92c7a17"><a class="self-link" href="#issue-b92c7a17"></a> Update when workers have TT.</p>
-     <ol>
-      <li data-md>
-       <p>Set <var>sink</var> to the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate">concatenating</a> the list « <a data-link-type="dfn" href="https://heycam.github.io/webidl/#this" id="ref-for-this">this</a> IDL value’s <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-identifier" id="ref-for-dfn-identifier">identifier</a>, <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute④">attribute</a> identifier. » with <code>" "</code> as <var>separator</var>.</p>
-       <div class="example" id="extended-attribute-attribute-example">
-        <a class="self-link" href="#extended-attribute-attribute-example"></a> For example, the following annotation and JavaScript code: 
-<pre class="highlight"><c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <c- g>HTMLScriptElement</c-> {
-  [<c- g>CEReactions</c->, <c- g>TrustedTypes</c->=<c- n>TrustedScriptURL</c->] <c- b>attribute</c-> <c- n>ScriptURLString</c-> <c- g>src</c->;
-};
-</pre>
-<pre class="highlight">document<c- p>.</c->createElement<c- p>(</c-><c- t>'script'</c-><c- p>).</c->src <c- o>=</c-> foo<c- p>;</c->
-document<c- p>.</c->createElement<c- p>(</c-><c- t>'script'</c-><c- p>).</c->setAttribute<c- p>(</c-><c- t>'SrC'</c-><c- p>,</c-> foo<c- p>);</c->
-</pre>
-        <p>causes the <var>sink</var> value to be <code>"HTMLScriptElement src"</code>.</p>
-       </div>
-      <li data-md>
-       <p>Set <var>value</var> to the result of running the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string">Get Trusted Type compliant string</a> algorithm, passing the following arguments:</p>
-       <ul>
-        <li data-md>
-         <p>the new value as <var>input</var>,</p>
-        <li data-md>
-         <p><code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑤">TrustedTypes</a></code> extended attribute identifier as <var>expectedType</var>,</p>
-        <li data-md>
-         <p><var>sink</var> as <var>sink</var>,</p>
-        <li data-md>
-         <p><code>'script'</code> as <var>sinkGroup</var>,</p>
-        <li data-md>
-         <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#context-object" id="ref-for-context-object⑥">context object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global②">relevant global object</a> as <var>global</var>.</p>
-       </ul>
-       <p class="issue" id="issue-adaa63a4"><a class="self-link" href="#issue-adaa63a4"></a> Remove hardcoding 'script' when new sink groups are specified.</p>
-      <li data-md>
-       <p>If an exception was thrown, rethrow exception and abort further steps.</p>
-     </ol>
-    <li data-md>
-     <p>Run the originally specified steps for this construct, using <var>value</var> as a new value to set.</p>
-   </ol>
-   <p class="note" role="note"><span>Note:</span> If the IDL attribute <a data-link-type="dfn">reflects</a> a content attribute, identical steps should be performed when that content attribute is modified by JavaScript code e.g. via <code>Element.setAttribute()</code> function.</p>
-   <p>When the extended attribute appears on an <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-operation" id="ref-for-dfn-operation①">operation</a> argument, before its operation is invoked, run the following steps:</p>
-   <ol>
-    <li data-md>
-     <p>If <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#context-object" id="ref-for-context-object⑦">context object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global③">relevant global object</a> has a <a data-link-type="dfn" href="#window-trusted-type-policy-factory" id="ref-for-window-trusted-type-policy-factory①">trusted type policy factory</a>:</p>
-     <p class="issue" id="issue-b92c7a17①"><a class="self-link" href="#issue-b92c7a17①"></a> Update when workers have TT.</p>
-     <ol>
-      <li data-md>
-       <p>Set <var>sink</var> to the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate①">concatenating</a> the list « <a data-link-type="dfn" href="https://heycam.github.io/webidl/#this" id="ref-for-this①">this</a> IDL value’s <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-identifier" id="ref-for-dfn-identifier①">identifier</a>, <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-operation" id="ref-for-dfn-operation②">operation</a> identifier. » with <code>" "</code> as <var>separator</var>.</p>
-       <div class="example" id="extended-attribute-operation-example">
-        <a class="self-link" href="#extended-attribute-operation-example"></a> For example, the following annotation and JavaScript code: 
-<pre class="highlight"><c- b>partial</c-> <c- b>interface</c-> <c- g>Element</c-> {
-  <c- b>void</c-> <c- g>insertAdjacentHTML</c->(<c- b>DOMString</c-> <c- g>position</c->, [<c- g>TrustedTypes</c->=<c- n>TrustedHTML</c->] <c- n>HTMLString</c-> <c- g>text</c->);
-};
-</pre>
-<pre class="highlight">document<c- p>.</c->createElement<c- p>(</c-><c- t>'a'</c-><c- p>).</c->insertAdjacentHTML<c- p>(</c-><c- t>'beforebegin'</c-><c- p>,</c-> foo<c- p>);</c->
-</pre>
-        <p>causes the <var>sink</var> value to be <code>"Element insertAdjacentHTML"</code>.</p>
-       </div>
-      <li data-md>
-       <p>Set the new argument value to the result of running the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string①">Get Trusted Type compliant string</a> algorithm, passing the following arguments:</p>
-       <ul>
-        <li data-md>
-         <p>the argument value as <var>input</var>,</p>
-        <li data-md>
-         <p><code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑥">TrustedTypes</a></code> extended attribute identifier as <var>expectedType</var>,</p>
-        <li data-md>
-         <p><var>sink</var> as <var>sink</var>,</p>
-        <li data-md>
-         <p><code>'script'</code> as <var>sinkGroup</var>,</p>
-        <li data-md>
-         <p><a data-link-type="dfn" href="https://dom.spec.whatwg.org/#context-object" id="ref-for-context-object⑧">context object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global④">relevant global object</a> as <var>global</var>.</p>
-       </ul>
-       <p class="issue" id="issue-672bcf0f"><a class="self-link" href="#issue-672bcf0f"></a> Remove hardcoding 'script' when new sink types are specified.</p>
-      <li data-md>
-       <p>If an exception was thrown, rethrow exception and abort further steps.</p>
-     </ol>
-    <li data-md>
-     <p>Invoke the originally specified steps for the operation.</p>
-   </ol>
    <h2 class="heading settled" data-level="3" id="algorithms"><span class="secno">3. </span><span class="content">Algorithms</span><a class="self-link" href="#algorithms"></a></h2>
    <h3 class="heading settled" data-level="3.1" id="create-trusted-type-policy-algorithm"><span class="secno">3.1. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-create-a-trusted-type-policy">Create a Trusted Type Policy</dfn></span><a class="self-link" href="#create-trusted-type-policy-algorithm"></a></h3>
    <p>To create a <code class="idl"><a data-link-type="idl" href="#trustedtypepolicy" id="ref-for-trustedtypepolicy⑨">TrustedTypePolicy</a></code>, given a <code class="idl"><a data-link-type="idl" href="#trustedtypepolicyfactory" id="ref-for-trustedtypepolicyfactory">TrustedTypePolicyFactory</a></code> (<var>factory</var>),
@@ -2430,7 +2349,7 @@ <h3 class="heading settled" data-level="3.2" id="create-a-trusted-type-algorithm
      <p>If <var>policyValue</var> is an error, return <var>policyValue</var> and abort the following steps.</p>
     <li data-md>
      <p>If <var>policy</var>’s <a data-link-type="dfn" href="#trustedtypepolicy-name" id="ref-for-trustedtypepolicy-name①">name</a> is <code>"default"</code> and the <var>policyValue</var> is null or undefined, return <var>policyValue</var>.</p>
-     <p class="note" role="note"><span>Note:</span> This is used in a <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string②">Get Trusted Type compliant string</a> algorithm to signal that
+     <p class="note" role="note"><span>Note:</span> This is used in a <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string">Get Trusted Type compliant string</a> algorithm to signal that
 a value was rejected.</p>
     <li data-md>
      <p>Let <var>dataString</var> be the result of stringifying <var>policyValue</var>.</p>
@@ -2442,7 +2361,7 @@ <h3 class="heading settled" data-level="3.2" id="create-a-trusted-type-algorithm
      <p>Return <var>trustedObject</var>.</p>
    </ol>
    <h3 class="heading settled" data-level="3.3" id="get-trusted-type-compliant-string-algorithm"><span class="secno">3.3. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-get-trusted-type-compliant-string">Get Trusted Type compliant string</dfn></span><a class="self-link" href="#get-trusted-type-compliant-string-algorithm"></a></h3>
-   <p>This algorithm will return a string that can be used with an <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink①⑨">injection sink</a>, optionally unwrapping it from a matching <a data-link-type="dfn" href="#trusted-type" id="ref-for-trusted-type④">Trusted Type</a>.
+   <p>This algorithm will return a string that can be used with an <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink①⑧">injection sink</a>, optionally unwrapping it from a matching <a data-link-type="dfn" href="#trusted-type" id="ref-for-trusted-type④">Trusted Type</a>.
 It will ensure that the Trusted Type <a data-link-type="dfn" href="#enforcement" id="ref-for-enforcement⑥">enforcement</a> rules were respected.</p>
    <p>Given a <code class="idl"><a data-link-type="idl" href="#typedefdef-trustedtype" id="ref-for-typedefdef-trustedtype">TrustedType</a></code> type (<var>expectedType</var>), a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-realm-global" id="ref-for-concept-realm-global①">global object</a> (<var>global</var>), <code class="idl"><a data-link-type="idl" href="#typedefdef-trustedtype" id="ref-for-typedefdef-trustedtype①">TrustedType</a></code> or a string (<var>input</var>), a string (<var>sink</var>) and a string (<var>sinkGroup</var>), run these steps:</p>
    <ol>
@@ -2479,11 +2398,11 @@ <h3 class="heading settled" data-level="3.3" id="get-trusted-type-compliant-stri
      <p>Return stringified <var>convertedInput</var>.</p>
    </ol>
    <h3 class="heading settled" data-level="3.4" id="process-value-with-a-default-policy-algorithm"><span class="secno">3.4. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-process-value-with-a-default-policy">Process value with a default policy</dfn></span><a class="self-link" href="#process-value-with-a-default-policy-algorithm"></a></h3>
-   <p>This algorithm routes a value to be assigned to an <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⓪">injection sink</a> through a default policy, should one exist.</p>
+   <p>This algorithm routes a value to be assigned to an <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink①⑨">injection sink</a> through a default policy, should one exist.</p>
    <p>Given a <code class="idl"><a data-link-type="idl" href="#typedefdef-trustedtype" id="ref-for-typedefdef-trustedtype②">TrustedType</a></code> type (<var>expectedType</var>), a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-realm-global" id="ref-for-concept-realm-global②">global object</a> (<var>global</var>), <code class="idl"><a data-link-type="idl" href="#typedefdef-trustedtype" id="ref-for-typedefdef-trustedtype③">TrustedType</a></code> or a string (<var>input</var>), and a string (<var>sink</var>), run these steps:</p>
    <ol>
     <li data-md>
-     <p>Let <var>defaultPolicy</var> be the value of <var>global</var>’s <a data-link-type="dfn" href="#window-trusted-type-policy-factory" id="ref-for-window-trusted-type-policy-factory②">trusted type policy factory</a>'s <code>[[DefaultPolicy]]</code> slot. If the slot is empty, return <code>null</code>.</p>
+     <p>Let <var>defaultPolicy</var> be the value of <var>global</var>’s <a data-link-type="dfn" href="#window-trusted-type-policy-factory" id="ref-for-window-trusted-type-policy-factory">trusted type policy factory</a>'s <code>[[DefaultPolicy]]</code> slot. If the slot is empty, return <code>null</code>.</p>
     <li data-md>
      <p>Let <var>convertedInput</var> be the result of executing <a data-link-type="abstract-op" href="#abstract-opdef-create-a-trusted-type" id="ref-for-abstract-opdef-create-a-trusted-type③">Create a
 Trusted Type</a> algorithm, with the following arguments:</p>
@@ -2507,12 +2426,12 @@ <h3 class="heading settled" data-level="3.5" id="prepare-script-url-and-text"><s
      <p>If <var>script</var> does not have a <code class="idl"><a data-link-type="idl">src</a></code> content attribute, set its <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> internal slot value to <code>null</code>.</p>
     <li data-md>
      <p>Otherwise, if <var>script</var>’s <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> internal slot value is not equal to its <code class="idl"><a data-link-type="idl">src</a></code> attribute value,
-set <var>script</var>’s <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> to the result of executing <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string③">Get Trusted Type compliant string</a>, with the following arguments:</p>
+set <var>script</var>’s <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> to the result of executing <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string①">Get Trusted Type compliant string</a>, with the following arguments:</p>
      <ul>
       <li data-md>
-       <p><code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl③">TrustedScriptURL</a></code> as <var>expectedType</var>,</p>
+       <p><code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl②">TrustedScriptURL</a></code> as <var>expectedType</var>,</p>
       <li data-md>
-       <p><var>script</var>’s <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#document" id="ref-for-document①">Document</a></code>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global⑤">relevant global object</a> as <var>global</var>,</p>
+       <p><var>script</var>’s <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#document" id="ref-for-document①">Document</a></code>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global①">relevant global object</a> as <var>global</var>,</p>
       <li data-md>
        <p><var>script</var>’s <code class="idl"><a data-link-type="idl">src</a></code> attribute value as <var>input</var>,</p>
       <li data-md>
@@ -2523,12 +2442,12 @@ <h3 class="heading settled" data-level="3.5" id="prepare-script-url-and-text"><s
      <p>If the algorithm threw an error, rethrow the error and abort further steps.</p>
     <li data-md>
      <p>If <var>script</var>’s <code class="idl"><a data-link-type="idl">[[ScriptText]]</a></code> internal slot value is not equal to its <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-child-text-content" id="ref-for-concept-child-text-content">child text content</a>,
-set <var>script</var>’s <code class="idl"><a data-link-type="idl">[[ScriptText]]</a></code> to the result of executing <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string④">Get Trusted Type compliant string</a>, with the following arguments:</p>
+set <var>script</var>’s <code class="idl"><a data-link-type="idl">[[ScriptText]]</a></code> to the result of executing <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string②">Get Trusted Type compliant string</a>, with the following arguments:</p>
      <ul>
       <li data-md>
-       <p><code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl④">TrustedScriptURL</a></code> as <var>expectedType</var>,</p>
+       <p><code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl③">TrustedScriptURL</a></code> as <var>expectedType</var>,</p>
       <li data-md>
-       <p><var>script</var>’s <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#document" id="ref-for-document②">Document</a></code>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global⑥">relevant global object</a> as <var>global</var>,</p>
+       <p><var>script</var>’s <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#document" id="ref-for-document②">Document</a></code>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global②">relevant global object</a> as <var>global</var>,</p>
       <li data-md>
        <p><var>script</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-child-text-content" id="ref-for-concept-child-text-content①">child text content</a> attribute value,</p>
       <li data-md>
@@ -2539,25 +2458,89 @@ <h3 class="heading settled" data-level="3.5" id="prepare-script-url-and-text"><s
      <p>If the algorithm threw an error, rethrow the error.</p>
    </ol>
    <h2 class="heading settled" data-level="4" id="integrations"><span class="secno">4. </span><span class="content">Integrations</span><a class="self-link" href="#integrations"></a></h2>
-<pre class="idl highlight def"><c- b>typedef</c-> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑨"><c- b>DOMString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑦"><c- n>TrustedHTML</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-htmlstring"><code><c- g>HTMLString</c-></code></dfn>;
-<c- b>typedef</c-> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⓪"><c- b>DOMString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑥"><c- n>TrustedScript</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-scriptstring"><code><c- g>ScriptString</c-></code></dfn>;
-<c- b>typedef</c-> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString①"><c- b>USVString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑤"><c- n>TrustedScriptURL</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-scripturlstring"><code><c- g>ScriptURLString</c-></code></dfn>;
-<c- b>typedef</c-> (<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑧"><c- n>TrustedHTML</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑦"><c- n>TrustedScript</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑥"><c- n>TrustedScriptURL</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-trustedtype"><code><c- g>TrustedType</c-></code></dfn>;
-
-<c- b>typedef</c-> (([<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②①"><c- b>DOMString</c-></a>) <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑨"><c- n>TrustedHTML</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-htmlstringdefaultsempty"><code><c- g>HTMLStringDefaultsEmpty</c-></code></dfn>;
+<pre class="idl highlight def"><c- b>typedef</c-> [<a class="idl-code" data-link-type="extended-attribute"><c- g>StringContext</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑥"><c- n>TrustedHTML</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑨"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-htmlstring"><code><c- g>HTMLString</c-></code></dfn>;
+<c- b>typedef</c-> [<a class="idl-code" data-link-type="extended-attribute"><c- g>StringContext</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑤"><c- n>TrustedScript</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⓪"><c- b>DOMString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-scriptstring"><code><c- g>ScriptString</c-></code></dfn>;
+<c- b>typedef</c-> [<a class="idl-code" data-link-type="extended-attribute"><c- g>StringContext</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl④"><c- n>TrustedScriptURL</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString①"><c- b>USVString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-scripturlstring"><code><c- g>ScriptURLString</c-></code></dfn>;
+<c- b>typedef</c-> (<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑦"><c- n>TrustedHTML</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑥"><c- n>TrustedScript</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑤"><c- n>TrustedScriptURL</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-trustedtype"><code><c- g>TrustedType</c-></code></dfn>;
 </pre>
-   <p class="note" role="note"><span>Note:</span> <code class="idl"><a data-link-type="idl" href="#typedefdef-htmlstringdefaultsempty" id="ref-for-typedefdef-htmlstringdefaultsempty">HTMLStringDefaultsEmpty</a></code> is a non-nullable variant that accepts <em>null</em> on set.
-Having this separate type allows <a href="https://heycam.github.io/webidl/#TreatNullAs">Web IDL §3.3.21 [TreatNullAs]</a> to attach to DOMString
-per heycam/webidl#441.</p>
-   <p class="issue" id="issue-52d7d8d6"><a class="self-link" href="#issue-52d7d8d6"></a> <a href="https://heycam.github.io/webidl/#TreatNullAs">TreatNullAs=EmptyString</a> is confusing.
-See note "It should not be used in specifications unless ...".
-For some sinks a <code>null</code> value will result in "", and "null" for others.
-This already caused problems in the polyfill. <a href="https://github.com/w3c/webappsec-trusted-types/issues/2">&lt;https://github.com/w3c/webappsec-trusted-types/issues/2></a></p>
-   <h3 class="heading settled" data-level="4.1" id="integration-with-html"><span class="secno">4.1. </span><span class="content">Integration with HTML</span><a class="self-link" href="#integration-with-html"></a></h3>
+   <h3 class="heading settled" data-level="4.1" id="webidl-integration"><span class="secno">4.1. </span><span class="content">Integration with WebIDL</span><a class="self-link" href="#webidl-integration"></a></h3>
+   <p class="issue" id="issue-68115cf6"><a class="self-link" href="#issue-68115cf6"></a> Keep in sync with https://github.com/heycam/webidl/pull/841.</p>
+   <h4 class="heading settled" data-level="4.1.1" id="webidl-string-context-xattr"><span class="secno">4.1.1. </span><span class="content">[StringContext]</span><a class="self-link" href="#webidl-string-context-xattr"></a></h4>
+   <p>This specification defines a new [<code class="idl"><a data-link-type="idl">StringContext</a></code>] <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-extended-attribute" id="ref-for-dfn-extended-attribute">extended attribute</a>.</p>
+   <p>If the [<code class="idl"><a data-link-type="idl">StringContext</a></code>] <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-extended-attribute" id="ref-for-dfn-extended-attribute①">extended attribute</a> appears on <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②①">DOMString</a></code> or <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString②">USVString</a></code>, it
+modifies how the value is converted to the IDL type, causing additional value validation to
+adhere to the context the string is used in.</p>
+   <p>The [<code class="idl"><a data-link-type="idl">StringContext</a></code>] extended attribute must <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-xattr-identifier" id="ref-for-dfn-xattr-identifier">take an identifier</a>. The <a data-link-type="dfn" href="https://drafts.csswg.org/css-syntax-3/#identifier" id="ref-for-identifier">identifier</a> must be one of <code class="idl"><a data-link-type="idl" href="#trustedhtml" id="ref-for-trustedhtml⑧">TrustedHTML</a></code>, <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript⑦">TrustedScript</a></code> and <code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl⑥">TrustedScriptURL</a></code>.</p>
+   <p class="issue" id="issue-679ee1ba"><a class="self-link" href="#issue-679ee1ba"></a> Make sure this is OK, otherwise use strings and convert them to TrustedXYZ in this spec only.</p>
+   <p>[<code class="idl"><a data-link-type="idl">StringContext</a></code>] extended attribute may only annotate a type of a <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-regular-attribute" id="ref-for-dfn-regular-attribute">regular attribute</a> or
+a <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-regular-operation" id="ref-for-dfn-regular-operation">regular operation</a> argument. A type annotated with the [<code class="idl"><a data-link-type="idl">StringContext</a></code>]
+extended attribute must not appear in a <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-read-only" id="ref-for-dfn-read-only">read only</a> attribute. The <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-regular-attribute" id="ref-for-dfn-regular-attribute①">regular attribute</a> or
+a <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-regular-operation" id="ref-for-dfn-regular-operation①">regular operation</a> argument that the type annotated with the [<code class="idl"><a data-link-type="idl">StringContext</a></code>] extended
+attribute appears in is its <dfn class="dfn-paneled" data-dfn-type="dfn" data-noexport id="related-construct">related construct</dfn>.</p>
+   <p>A type that is not <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②②">DOMString</a></code> or <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString③">USVString</a></code> must not be <a data-link-type="dfn">associated with</a> the [<code class="idl"><a data-link-type="idl">StringContext</a></code>] extended attribute.</p>
+   <p>See the rules for converting ECMAScript values to the IDL types in <a href="https://heycam.github.io/webidl/#es-DOMString">Web IDL §3.2.9 DOMString</a> for the specific requirements that the use of [<code class="idl"><a data-link-type="idl">StringContext</a></code>] entails.</p>
+   <div class="example" id="webidl-stringcontext-example">
+    <a class="self-link" href="#webidl-stringcontext-example"></a> 
+    <p>In the following <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-idl-fragment" id="ref-for-dfn-idl-fragment">IDL fragment</a>,
+    a <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-variadic" id="ref-for-dfn-variadic">variadic</a> <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-operation" id="ref-for-dfn-operation">operation</a> is declared
+    that uses the [<code class="idl"><a data-link-type="idl">StringContext</a></code>] <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-extended-attribute" id="ref-for-dfn-extended-attribute②">extended attribute</a> on all its arguments:</p>
+<pre class="highlight"><c- b>interface</c-> <c- g>Document</c-> {
+  <c- b>void</c-> <c- g>write</c->([<c- g>StringContext</c->=<c- n>html</c->] <c- b>DOMString</c->... <c- g>text</c->);
+};
+</pre>
+   </div>
+   <h4 class="heading settled" data-level="4.1.2" id="webidl-applicable-to-types"><span class="secno">4.1.2. </span><span class="content">Extended attributes applicable to types</span><a class="self-link" href="#webidl-applicable-to-types"></a></h4>
+   <p>
+    The following extended attributes are <dfn data-dfn-for="extended attributes" data-dfn-type="dfn" data-noexport id="extended-attributes-applicable-to-types">applicable to types<a class="self-link" href="#extended-attributes-applicable-to-types"></a></dfn>:
+ [<code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#AllowShared" id="ref-for-AllowShared">AllowShared</a></code>],
+ [<code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#Clamp" id="ref-for-Clamp">Clamp</a></code>],
+ [<code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#EnforceRange" id="ref-for-EnforceRange">EnforceRange</a></code>]
+    <ins>,
+ [<code class="idl"><a data-link-type="idl">StringContext</a></code>]</ins>
+     and
+ [<code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs">TreatNullAs</a></code>].
+   </p>
+   <h4 class="heading settled" data-level="4.1.3" id="webidl-type-conversion"><span class="secno">4.1.3. </span><span class="content">Type conversion</span><a class="self-link" href="#webidl-type-conversion"></a></h4>
+   <p>This specification modifies the algorithm implementing the conversion to DOMString in <a href="https://heycam.github.io/webidl/#es-DOMString">Web IDL §3.2.9 DOMString</a>:</p>
+   <p>An ECMAScript value <var>V</var> is <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-convert-ecmascript-to-idl-value" id="ref-for-dfn-convert-ecmascript-to-idl-value">converted</a> to an IDL <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②③">DOMString</a></code> value by running the following algorithm:</p>
+   <ol>
+    <li data-md>
+     <ins>
+      If the conversion is to an IDL type <a data-link-type="dfn">associated with</a> the
+  [<code class="idl"><a data-link-type="idl">StringContext</a></code>] extended attribute, then set <var>V</var> to the result of <a data-link-type="dfn" href="#dfn-validate-the-string-in-context" id="ref-for-dfn-validate-the-string-in-context">validate the string in context</a>, passing <a data-link-type="dfn" href="https://heycam.github.io/webidl/#this" id="ref-for-this">this</a>, <var>V</var>, the <code class="idl"><a data-link-type="idl">StringContext</a></code> extended attribute <a data-link-type="dfn" href="https://drafts.csswg.org/css-syntax-3/#identifier" id="ref-for-identifier①">identifier</a>, and the <a data-link-type="dfn" href="https://drafts.csswg.org/css-syntax-3/#identifier" id="ref-for-identifier②">identifier</a> of the [<code class="idl"><a data-link-type="idl">StringContext</a></code>] extended attribute <a data-link-type="dfn" href="#related-construct" id="ref-for-related-construct">related construct</a>. 
+      <p class="note" role="note"><span>Note:</span> That algorithm may <a data-link-type="dfn">throw</a> a <code class="idl"><a data-link-type="idl">TypeError</a></code>.</p>
+     </ins>
+    <li data-md>
+     <p>If <var>V</var> is <emu-val>null</emu-val> and the conversion is to an IDL type <a data-link-type="dfn">associated with</a> the [<code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs①">TreatNullAs</a></code>] extended
+  attribute, then return the <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②④">DOMString</a></code> value that represents the empty string.</p>
+    <li data-md>
+     <p>Let <var>x</var> be <a data-link-type="abstract-op">ToString</a>(<var>V</var>).</p>
+    <li data-md>
+     <p>Return the IDL <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⑤">DOMString</a></code> value that represents the same sequence of code units as the one the ECMAScript String value <var>x</var> represents.</p>
+   </ol>
+   <h4 class="heading settled" data-level="4.1.4" id="webidl-validate-the-string-in-context"><span class="secno">4.1.4. </span><span class="content">Validate the string in context</span><a class="self-link" href="#webidl-validate-the-string-in-context"></a></h4>
+   <p>This specification adds a following section to <a href="https://heycam.github.io/webidl/#es-security">Web IDL §3.4 Security</a>.</p>
+   <p>Certain algorithms in <a href="https://heycam.github.io/webidl/#es-type-mapping">Web IDL §3.2 ECMAScript type mapping</a> are defined to <dfn class="dfn-paneled" data-dfn-type="dfn" data-export id="dfn-validate-the-string-in-context">validate the string in context</dfn> on a given
+value. This check is used to determine whether a given value
+is appropriate for its <code class="idl"><a data-link-type="idl">StringContext</a></code>. This validation takes the following four inputs:</p>
+   <ol>
+    <li data-md>
+     <p>the <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-platform-object" id="ref-for-dfn-platform-object">platform object</a> on
+which the operation invocation or attribute access is being done,</p>
+    <li data-md>
+     <p>the value to validate,</p>
+    <li data-md>
+     <p>the <code class="idl"><a data-link-type="idl">StringContext</a></code> <a data-link-type="dfn" href="https://drafts.csswg.org/css-syntax-3/#identifier" id="ref-for-identifier③">identifier</a>, and</p>
+    <li data-md>
+     <p>the <a data-link-type="dfn" href="https://drafts.csswg.org/css-syntax-3/#identifier" id="ref-for-identifier④">identifier</a> of the operation or attribute.</p>
+   </ol>
+   <p>The algorithm returns an ECMAScript String value, or <a data-link-type="dfn">throws</a> a <code class="idl"><a data-link-type="idl">TypeError</a></code>.</p>
+   <p class="note" role="note"><span>Note:</span> The HTML Standard defines how the validation is performed. <a data-link-type="biblio" href="#biblio-html">[HTML]</a></p>
+   <h3 class="heading settled" data-level="4.2" id="integration-with-html"><span class="secno">4.2. </span><span class="content">Integration with HTML</span><a class="self-link" href="#integration-with-html"></a></h3>
    <p><code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/window-object.html#window" id="ref-for-window①">Window</a></code> objects have a <dfn class="dfn-paneled" data-dfn-for="Window" data-dfn-type="dfn" data-noexport id="window-trusted-type-policy-factory">trusted type policy factory</dfn>,
 which is a <code class="idl"><a data-link-type="idl" href="#trustedtypepolicyfactory" id="ref-for-trustedtypepolicyfactory①">TrustedTypePolicyFactory</a></code> object.</p>
    <p class="issue" id="issue-a5679137"><a class="self-link" href="#issue-a5679137"></a> Define for workers.</p>
-   <h4 class="heading settled" data-level="4.1.1" id="extensions-to-the-window-interface"><span class="secno">4.1.1. </span><span class="content">Extensions to the Window interface</span><a class="self-link" href="#extensions-to-the-window-interface"></a></h4>
+   <h4 class="heading settled" data-level="4.2.1" id="extensions-to-the-window-interface"><span class="secno">4.2.1. </span><span class="content">Extensions to the Window interface</span><a class="self-link" href="#extensions-to-the-window-interface"></a></h4>
    <p>This document extends the <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/window-object.html#window" id="ref-for-window②">Window</a></code> interface defined by <a data-link-type="biblio" href="#biblio-html5">HTML</a>:</p>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/window-object.html#window" id="ref-for-window③"><c- g>Window</c-></a> {
   [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#SecureContext" id="ref-for-SecureContext⑤"><c- g>SecureContext</c-></a>] <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#trustedtypepolicyfactory" id="ref-for-trustedtypepolicyfactory②"><c- n>TrustedTypePolicyFactory</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="Window" data-dfn-type="attribute" data-export data-readonly data-type="TrustedTypePolicyFactory" id="dom-window-trustedtypes"><code><c- g>trustedTypes</c-></code></dfn>;
@@ -2568,42 +2551,43 @@ <h4 class="heading settled" data-level="4.1.1" id="extensions-to-the-window-inte
    <p class="note" role="note"><span>Note:</span> The implementation in Chrome &lt; 78 uses <code>window.TrustedTypes</code> instead
       of <code>window.trustedTypes</code>.</p>
    <p class="issue" id="issue-3d9ee9e6"><a class="self-link" href="#issue-3d9ee9e6"></a> Remove the note when the API in Chrome is shipped.</p>
-   <h4 class="heading settled" data-level="4.1.2" id="extensions-to-the-document-interface"><span class="secno">4.1.2. </span><span class="content">Extensions to the Document interface</span><a class="self-link" href="#extensions-to-the-document-interface"></a></h4>
+   <h4 class="heading settled" data-level="4.2.2" id="extensions-to-the-document-interface"><span class="secno">4.2.2. </span><span class="content">Extensions to the Document interface</span><a class="self-link" href="#extensions-to-the-document-interface"></a></h4>
    <p>This document modifies the <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#document" id="ref-for-document③">Document</a></code> interface defined by <a data-link-type="biblio" href="#biblio-html5">HTML</a>:</p>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://dom.spec.whatwg.org/#document" id="ref-for-document④"><c- g>Document</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions"><c- g>CEReactions</c-></a>] <c- b>void</c-> <dfn class="dfn-paneled idl-code" data-dfn-for="Document" data-dfn-type="method" data-export data-lt="write(...text)|write()" id="dom-document-write"><code><c- g>write</c-></code></dfn>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑦"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⓪"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring"><c- n>HTMLString</c-></a>... <dfn class="idl-code" data-dfn-for="Document/write(...text)" data-dfn-type="argument" data-export id="dom-document-write-text-text"><code><c- g>text</c-></code><a class="self-link" href="#dom-document-write-text-text"></a></dfn>);
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①"><c- g>CEReactions</c-></a>] <c- b>void</c-> <dfn class="idl-code" data-dfn-for="Document" data-dfn-type="method" data-export data-lt="writeln(...text)|writeln()" id="dom-document-writeln"><code><c- g>writeln</c-></code><a class="self-link" href="#dom-document-writeln"></a></dfn>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑧"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①①"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring①"><c- n>HTMLString</c-></a>... <dfn class="idl-code" data-dfn-for="Document/writeln(...text)" data-dfn-type="argument" data-export id="dom-document-writeln-text-text"><code><c- g>text</c-></code><a class="self-link" href="#dom-document-writeln-text-text"></a></dfn>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions"><c- g>CEReactions</c-></a>] <c- b>void</c-> <dfn class="dfn-paneled idl-code" data-dfn-for="Document" data-dfn-type="method" data-export data-lt="write(...text)|write()" id="dom-document-write"><code><c- g>write</c-></code></dfn>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring"><c- n>HTMLString</c-></a>... <dfn class="idl-code" data-dfn-for="Document/write(...text)" data-dfn-type="argument" data-export id="dom-document-write-text-text"><code><c- g>text</c-></code><a class="self-link" href="#dom-document-write-text-text"></a></dfn>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①"><c- g>CEReactions</c-></a>] <c- b>void</c-> <dfn class="idl-code" data-dfn-for="Document" data-dfn-type="method" data-export data-lt="writeln(...text)|writeln()" id="dom-document-writeln"><code><c- g>writeln</c-></code><a class="self-link" href="#dom-document-writeln"></a></dfn>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring①"><c- n>HTMLString</c-></a>... <dfn class="idl-code" data-dfn-for="Document/writeln(...text)" data-dfn-type="argument" data-export id="dom-document-writeln-text-text"><code><c- g>text</c-></code><a class="self-link" href="#dom-document-writeln-text-text"></a></dfn>);
 };
 </pre>
-   <h4 class="heading settled" data-level="4.1.3" id="enfocement-in-scripts"><span class="secno">4.1.3. </span><span class="content">Enforcement for scripts</span><a class="self-link" href="#enfocement-in-scripts"></a></h4>
-   <h5 class="heading settled" data-level="4.1.3.1" id="slots-with-trusted-values"><span class="secno">4.1.3.1. </span><span class="content">Slots with trusted values</span><a class="self-link" href="#slots-with-trusted-values"></a></h5>
+   <h4 class="heading settled" data-level="4.2.3" id="enfocement-in-scripts"><span class="secno">4.2.3. </span><span class="content">Enforcement for scripts</span><a class="self-link" href="#enfocement-in-scripts"></a></h4>
+   <h5 class="heading settled" data-level="4.2.3.1" id="slots-with-trusted-values"><span class="secno">4.2.3.1. </span><span class="content">Slots with trusted values</span><a class="self-link" href="#slots-with-trusted-values"></a></h5>
+   <p class="issue" id="issue-bcb72f9a"><a class="self-link" href="#issue-bcb72f9a"></a> Figure out if we can drop <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> slot after IDL + DOM changes.</p>
    <p>This document modifies <code class="idl"><a data-link-type="idl" href="https://fetch.spec.whatwg.org/#dom-requestdestination-script" id="ref-for-dom-requestdestination-script①">script</a></code> elements. Each script has:</p>
    <dl>
     <dt data-md><dfn data-dfn-for="script" data-dfn-type="dfn" data-noexport id="script-scripturl"><code>[[ScriptURL]]</code><a class="self-link" href="#script-scripturl"></a></dfn> internal slot.
     <dd data-md>
      <p>A string, containing the URL to execute the script from
-that was set through a <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑨">TrustedTypes</a></code> compliant sink. Equivalent to <code class="idl"><a data-link-type="idl" href="#dom-htmlscriptelement-src" id="ref-for-dom-htmlscriptelement-src①">src</a></code> attribute value. Initially null.</p>
+that was set through a <code class="idl"><a data-link-type="idl">StringContext</a></code> compliant sink. Equivalent to <code class="idl"><a data-link-type="idl" href="#dom-htmlscriptelement-src" id="ref-for-dom-htmlscriptelement-src①">src</a></code> attribute value. Initially null.</p>
     <dt data-md><dfn data-dfn-for="script" data-dfn-type="dfn" data-noexport id="script-scripttext"><code>[[ScriptText]]</code><a class="self-link" href="#script-scripttext"></a></dfn> internal slot.
     <dd data-md>
      <p>A string, containing the body of the script to execute that was set
-through a <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⓪">TrustedTypes</a></code> compliant sink. Equivalent to script’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-child-text-content" id="ref-for-concept-child-text-content②">child text content</a>. Initially null.</p>
+through a <code class="idl"><a data-link-type="idl">StringContext</a></code> compliant sink. Equivalent to script’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-child-text-content" id="ref-for-concept-child-text-content②">child text content</a>. Initially null.</p>
    </dl>
-   <h5 class="heading settled" data-level="4.1.3.2" id="setting-slot-values"><span class="secno">4.1.3.2. </span><span class="content">Setting slot values</span><a class="self-link" href="#setting-slot-values"></a></h5>
+   <h5 class="heading settled" data-level="4.2.3.2" id="setting-slot-values"><span class="secno">4.2.3.2. </span><span class="content">Setting slot values</span><a class="self-link" href="#setting-slot-values"></a></h5>
    <p>This document modifies how <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement" id="ref-for-htmlscriptelement">HTMLScriptElement</a></code> <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-child-text-content" id="ref-for-concept-child-text-content③">child text content</a> can be set to allow applications to control dynamically created scripts. It does so by
 adding the <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/dom.html#dom-innertext" id="ref-for-dom-innertext">innerText</a></code> and <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#dom-node-textcontent" id="ref-for-dom-node-textcontent">textContent</a></code> attributes directly on <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement" id="ref-for-htmlscriptelement①">HTMLScriptElement</a></code>. The behavior of the attributes remains the same
-as in their original counterparts, apart from additional behavior triggered by the <code class="idl"><a data-link-type="idl" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①①">TrustedTypes</a></code> extended attribute presence.</p>
+as in their original counterparts, apart from additional behavior triggered by the <code class="idl"><a data-link-type="idl">StringContext</a></code> extended attribute presence.</p>
    <p class="note" role="note"><span>Note:</span> Using these IDL attributes is the recommended way of dynamically setting URL or a text of a script. Manipulating attribute nodes or text nodes directly will call a default policy on the final value when the script is prepared.</p>
    <p class="issue" id="issue-62c0f2c6"><a class="self-link" href="#issue-62c0f2c6"></a> Figure out what to do with script.setAttribute('src'). See <a href="https://github.com/whatwg/dom/issues/789">DOM#789</a>.</p>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement" id="ref-for-htmlscriptelement②"><c- g>HTMLScriptElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement"><c- n>HTMLElement</c-></a> {
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions②"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①②"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑧"><c- n>TrustedScript</c-></a>] <c- b>attribute</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs①"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring"><c- n>ScriptString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="[TreatNullAs=EmptyString] ScriptString" id="dom-htmlscriptelement-innertext"><code><c- g>innerText</c-></code><a class="self-link" href="#dom-htmlscriptelement-innertext"></a></dfn>;
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions③"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①③"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑨"><c- n>TrustedScript</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring①"><c- n>ScriptString</c-></a>? <dfn class="idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="ScriptString?" id="dom-htmlscriptelement-textcontent"><code><c- g>textContent</c-></code><a class="self-link" href="#dom-htmlscriptelement-textcontent"></a></dfn>;
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions④"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①④"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑦"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring"><c- n>ScriptURLString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlscriptelement-src"><code><c- g>src</c-></code></dfn>;
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑤"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑤"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript①⓪"><c- n>TrustedScript</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring②"><c- n>ScriptString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="ScriptString" id="dom-htmlscriptelement-text"><code><c- g>text</c-></code></dfn>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions②"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs②"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring"><c- n>ScriptString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="[TreatNullAs=EmptyString] ScriptString" id="dom-htmlscriptelement-innertext"><code><c- g>innerText</c-></code><a class="self-link" href="#dom-htmlscriptelement-innertext"></a></dfn>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions③"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring①"><c- n>ScriptString</c-></a>? <dfn class="idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="ScriptString?" id="dom-htmlscriptelement-textcontent"><code><c- g>textContent</c-></code><a class="self-link" href="#dom-htmlscriptelement-textcontent"></a></dfn>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions④"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring"><c- n>ScriptURLString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlscriptelement-src"><code><c- g>src</c-></code></dfn>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑤"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring②"><c- n>ScriptString</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="HTMLScriptElement" data-dfn-type="attribute" data-export data-type="ScriptString" id="dom-htmlscriptelement-text"><code><c- g>text</c-></code></dfn>;
 };
 </pre>
    <p>On setting, the <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/dom.html#dom-innertext" id="ref-for-dom-innertext①">innerText</a></code>, <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#dom-node-textcontent" id="ref-for-dom-node-textcontent①">textContent</a></code> and <code class="idl"><a data-link-type="idl" href="#dom-htmlscriptelement-text" id="ref-for-dom-htmlscriptelement-text①">text</a></code> IDL attributes perform the regular steps, and then set <a data-link-type="dfn">content object</a>'s <code class="idl"><a data-link-type="idl">[[ScriptText]]</a></code> internal slot value with the stringified value.</p>
    <p>On setting, the <code class="idl"><a data-link-type="idl" href="#dom-htmlscriptelement-src" id="ref-for-dom-htmlscriptelement-src②">src</a></code> IDL attribute performs the usual steps, and then sets <a data-link-type="dfn">content object</a>'s <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> internal slot value to its <code class="idl"><a data-link-type="idl">src</a></code> content attribute value.</p>
-   <h5 class="heading settled" data-level="4.1.3.3" id="slot-value-verification"><span class="secno">4.1.3.3. </span><span class="content">Slot value verification</span><a class="self-link" href="#slot-value-verification"></a></h5>
+   <h5 class="heading settled" data-level="4.2.3.3" id="slot-value-verification"><span class="secno">4.2.3.3. </span><span class="content">Slot value verification</span><a class="self-link" href="#slot-value-verification"></a></h5>
    <p>The <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/scripting.html#prepare-a-script" id="ref-for-prepare-a-script">prepare a script</a> algorithm is modified as follows:</p>
    <ol>
     <li>
@@ -2897,23 +2881,23 @@ <h5 class="heading settled" data-level="4.1.3.3" id="slot-value-verification"><s
      already executing.
      </dl>
    </ol>
-   <h4 class="heading settled" data-level="4.1.4" id="enforcement-in-sinks"><span class="secno">4.1.4. </span><span class="content">Enforcement in element attributes</span><a class="self-link" href="#enforcement-in-sinks"></a></h4>
+   <h4 class="heading settled" data-level="4.2.4" id="enforcement-in-sinks"><span class="secno">4.2.4. </span><span class="content">Enforcement in element attributes</span><a class="self-link" href="#enforcement-in-sinks"></a></h4>
    <p>This document modifies following IDL attributes of various DOM elements:</p>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmliframeelement" id="ref-for-htmliframeelement"><c- g>HTMLIFrameElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement①"><c- n>HTMLElement</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑥"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑥"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①②"><c- n>TrustedHTML</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring②"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLIFrameElement" data-dfn-type="attribute" data-export data-type="HTMLString" id="dom-htmliframeelement-srcdoc"><code><c- g>srcdoc</c-></code><a class="self-link" href="#dom-htmliframeelement-srcdoc"></a></dfn>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑥"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring②"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLIFrameElement" data-dfn-type="attribute" data-export data-type="HTMLString" id="dom-htmliframeelement-srcdoc"><code><c- g>srcdoc</c-></code><a class="self-link" href="#dom-htmliframeelement-srcdoc"></a></dfn>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlembedelement" id="ref-for-htmlembedelement"><c- g>HTMLEmbedElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement②"><c- n>HTMLElement</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑦"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑦"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑧"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring①"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLEmbedElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlembedelement-src"><code><c- g>src</c-></code><a class="self-link" href="#dom-htmlembedelement-src"></a></dfn>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑦"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring①"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLEmbedElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlembedelement-src"><code><c- g>src</c-></code><a class="self-link" href="#dom-htmlembedelement-src"></a></dfn>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlobjectelement" id="ref-for-htmlobjectelement"><c- g>HTMLObjectElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement③"><c- n>HTMLElement</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑧"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑧"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑨"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring②"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLObjectElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlobjectelement-data"><code><c- g>data</c-></code><a class="self-link" href="#dom-htmlobjectelement-data"></a></dfn>;
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑨"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑨"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl①⓪"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②②"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLObjectElement" data-dfn-type="attribute" data-export data-type="DOMString" id="dom-htmlobjectelement-codebase"><code><c- g>codeBase</c-></code><a class="self-link" href="#dom-htmlobjectelement-codebase"></a></dfn>; // obsolete
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑧"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring②"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLObjectElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlobjectelement-data"><code><c- g>data</c-></code><a class="self-link" href="#dom-htmlobjectelement-data"></a></dfn>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑨"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring③"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="HTMLObjectElement" data-dfn-type="attribute" data-export data-type="ScriptURLString" id="dom-htmlobjectelement-codebase"><code><c- g>codeBase</c-></code><a class="self-link" href="#dom-htmlobjectelement-codebase"></a></dfn>; // obsolete
 };
 </pre>
    <p class="issue" id="issue-13577559"><a class="self-link" href="#issue-13577559"></a> Add base.href enforcement.</p>
-   <h4 class="heading settled" data-level="4.1.5" id="enforcement-in-timer-functions"><span class="secno">4.1.5. </span><span class="content">Enforcement in timer functions</span><a class="self-link" href="#enforcement-in-timer-functions"></a></h4>
+   <h4 class="heading settled" data-level="4.2.5" id="enforcement-in-timer-functions"><span class="secno">4.2.5. </span><span class="content">Enforcement in timer functions</span><a class="self-link" href="#enforcement-in-timer-functions"></a></h4>
    <p>This document modifies the <code class="idl"><a data-link-type="idl" href="https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope" id="ref-for-windoworworkerglobalscope">WindowOrWorkerGlobalScope</a></code> interface mixin:</p>
 <pre class="idl highlight def"><c- b>typedef</c-> (<a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring③"><c- n>ScriptString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="https://heycam.github.io/webidl/#Function" id="ref-for-Function"><c- n>Function</c-></a>) <dfn class="dfn-paneled idl-code" data-dfn-type="typedef" data-export id="typedefdef-trustedtimerhandler"><code><c- g>TrustedTimerHandler</c-></code></dfn>;
 
@@ -2927,14 +2911,14 @@ <h4 class="heading settled" data-level="4.1.5" id="enforcement-in-timer-function
    <ol>
     <li data-md>
      <p>If the first operation argument is not a <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#Function" id="ref-for-Function①">Function</a></code>, or if the first operation argument is a <code class="idl"><a data-link-type="idl" href="#typedefdef-trustedtype" id="ref-for-typedefdef-trustedtype④">TrustedType</a></code>, set the first operation argument to the result of executing
-the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑤">Get Trusted Type compliant string</a> algorithm, with</p>
+the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string③">Get Trusted Type compliant string</a> algorithm, with</p>
      <ul>
       <li data-md>
-       <p><var>global</var> set to the <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#context-object" id="ref-for-context-object⑨">context object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global⑦">relevant global object</a>.</p>
+       <p><var>global</var> set to the <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#context-object" id="ref-for-context-object⑤">context object</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global③">relevant global object</a>.</p>
       <li data-md>
        <p><var>input</var> set to the first method argument, and</p>
       <li data-md>
-       <p><var>expectedType</var> set to <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①①">TrustedScript</a></code>.</p>
+       <p><var>expectedType</var> set to <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript⑧">TrustedScript</a></code>.</p>
       <li data-md>
        <p><var>sink</var> set to <code>Window.setInterval</code> if <var>repeat</var> is true, <code>Window.setTimeout</code> otherwise.</p>
       <li data-md>
@@ -2942,27 +2926,27 @@ <h4 class="heading settled" data-level="4.1.5" id="enforcement-in-timer-function
        <p class="note" role="note"><span>Note:</span> This matches the logic that the extended attribute would apply.</p>
      </ul>
    </ol>
-   <p class="note" role="note"><span>Note:</span> This makes sure that a <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①②">TrustedScript</a></code> is passed to timer
+   <p class="note" role="note"><span>Note:</span> This makes sure that a <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript⑨">TrustedScript</a></code> is passed to timer
 functions in place of a string when Trusted Types are enforced, but
 also unconditionally accepts any <code class="idl"><a data-link-type="idl" href="https://heycam.github.io/webidl/#Function" id="ref-for-Function②">Function</a></code> object.</p>
-   <h4 class="heading settled" data-level="4.1.6" id="enforcement-in-event-handler-content-attributes"><span class="secno">4.1.6. </span><span class="content">Enforcement in event handler content attributes</span><a class="self-link" href="#enforcement-in-event-handler-content-attributes"></a></h4>
+   <h4 class="heading settled" data-level="4.2.6" id="enforcement-in-event-handler-content-attributes"><span class="secno">4.2.6. </span><span class="content">Enforcement in event handler content attributes</span><a class="self-link" href="#enforcement-in-event-handler-content-attributes"></a></h4>
    <p>This document modifies the <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element-attributes-change-ext" id="ref-for-concept-element-attributes-change-ext">attribute change steps</a> for an <a href="https://www.w3.org/TR/html5/#event-handler-content-attributes">event handler content attribute</a>.</p>
    <p>At the beginning of step 5, insert the following steps:</p>
    <ol>
     <li data-md>
-     <p>Let <var>value</var> be the result of executing the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑥">Get Trusted Type compliant string</a> algorithm, with the following arguments:</p>
+     <p>Let <var>value</var> be the result of executing the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string④">Get Trusted Type compliant string</a> algorithm, with the following arguments:</p>
      <ul>
       <li data-md>
        <p><var>value</var> as <var>input</var>,</p>
       <li data-md>
-       <p><code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①③">TrustedScript</a></code> as <var>expectedType</var>,</p>
+       <p><code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①⓪">TrustedScript</a></code> as <var>expectedType</var>,</p>
       <li data-md>
        <p><code>'script'</code> as <var>sinkGroup</var></p>
       <li data-md>
-       <p><var>sink</var> being the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate②">concatenating</a> the list « <var>element</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element-local-name" id="ref-for-concept-element-local-name">local name</a>, <var>localName</var> » with <code>"."</code> as a <var>separator</var>.</p>
+       <p><var>sink</var> being the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate">concatenating</a> the list « <var>element</var>’s <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element-local-name" id="ref-for-concept-element-local-name">local name</a>, <var>localName</var> » with <code>"."</code> as a <var>separator</var>.</p>
        <p class="note" role="note"><span>Note:</span> For example, <code>document.createElement('div').onclick = value</code> will result in <var>sink</var> being <code>'div.onclick'</code>.</p>
       <li data-md>
-       <p><var>eventTarget</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global⑧">relevant global object</a> as <var>global</var>,</p>
+       <p><var>eventTarget</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global④">relevant global object</a> as <var>global</var>,</p>
      </ul>
     <li data-md>
      <p>If the algorithm throws an error, abort these steps.</p>
@@ -2976,15 +2960,58 @@ <h4 class="heading settled" data-level="4.1.6" id="enforcement-in-event-handler-
 img<c- p>.</c->setAttribute<c- p>(</c-><c- t>'onerror'</c-><c- p>,</c-> <c- t>'alert(1)'</c-><c- p>);</c-> <c- c1>// TypeError</c->
 </pre>
    </div>
-   <h3 class="heading settled" data-level="4.2" id="integration-with-svg"><span class="secno">4.2. </span><span class="content">Integration with SVG</span><a class="self-link" href="#integration-with-svg"></a></h3>
+   <h4 class="heading settled" data-level="4.2.7" id="html-validate-the-string-in-context"><span class="secno">4.2.7. </span><span class="content">Validate the string in context</span><a class="self-link" href="#html-validate-the-string-in-context"></a></h4>
+   <p>This specification defines the <a data-link-type="dfn" href="#dfn-validate-the-string-in-context" id="ref-for-dfn-validate-the-string-in-context①">validate the string in context</a> algorithm in <a href="https://html.spec.whatwg.org/multipage/browsers.html#integration-with-idl">HTML 5 §7.2.1 Integration with IDL</a>.</p>
+   <p>When <a data-link-type="dfn" href="#dfn-validate-the-string-in-context" id="ref-for-dfn-validate-the-string-in-context②">validate the string in context</a> is invoked, with <var>platformObject</var>, <var>value</var>, <var>stringContext</var>, and <var>identifier</var> run these steps:</p>
+   <ol>
+    <li data-md>
+     <p>If <a data-link-type="dfn">platformObject</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global⑤">relevant global object</a> has a <a data-link-type="dfn" href="#window-trusted-type-policy-factory" id="ref-for-window-trusted-type-policy-factory①">trusted type policy factory</a>:</p>
+     <p class="issue" id="issue-b92c7a17"><a class="self-link" href="#issue-b92c7a17"></a> Update when workers have TT.</p>
+     <ol>
+      <li data-md>
+       <p>Set <var>sink</var> to the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate①">concatenating</a> the list « <var>platformObject</var>’s <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-identifier" id="ref-for-dfn-identifier">identifier</a>, <var>identifier</var> » with <code>" "</code> as <var>separator</var>.</p>
+       <div class="example" id="validate-string-example">
+        <a class="self-link" href="#validate-string-example"></a> For example, the following annotation and JavaScript code: 
+<pre class="highlight"><c- b>typedef</c-> [<c- g>StringContext</c->=<c- n>TrustedHTML</c->] <c- b>DOMString</c-> <c- g>HTMLString</c->;
+[ <c- g>Exposed</c->=<c- n>Window</c->, <c- g>HTMLConstructor</c->] <c- b>interface</c-> <c- g>HTMLIFrameElement</c-> : <c- n>HTMLElement</c-> {
+    <c- b>attribute</c-> <c- n>HTMLString</c-> <c- g>srcdoc</c->;
+};
+</pre>
+<pre class="highlight">document<c- p>.</c->createElement<c- p>(</c-><c- t>'iframe'</c-><c- p>).</c->srcdoc <c- o>=</c-> foo<c- p>;</c->
+document<c- p>.</c->createElement<c- p>(</c-><c- t>'iframe'</c-><c- p>).</c->setAttribute<c- p>(</c-><c- t>'SRCdoc'</c-><c- p>,</c-> foo<c- p>);</c->
+</pre>
+        <p>causes the <var>sink</var> value to be <code>"HTMLIFrameElement srcdoc"</code>.</p>
+       </div>
+      <li data-md>
+       <p>Set <var>value</var> to the result of running the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑤">Get Trusted Type compliant string</a> algorithm, passing the following arguments:</p>
+       <ul>
+        <li data-md>
+         <p><var>value</var> as <var>input</var>,</p>
+        <li data-md>
+         <p><var>stringContext</var> as <var>expectedType</var>,</p>
+        <li data-md>
+         <p><var>sink</var> as <var>sink</var>,</p>
+        <li data-md>
+         <p><code>'script'</code> as <var>sinkGroup</var>,</p>
+        <li data-md>
+         <p><var>platformObject</var>’s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global" id="ref-for-concept-relevant-global⑥">relevant global object</a> as <var>global</var>.</p>
+       </ul>
+       <p class="issue" id="issue-adaa63a4"><a class="self-link" href="#issue-adaa63a4"></a> Remove hardcoding 'script' when new sink groups are specified.</p>
+      <li data-md>
+       <p>If an exception was thrown, rethrow exception and abort further steps.</p>
+     </ol>
+    <li data-md>
+     <p>Return <var>value</var>.</p>
+   </ol>
+   <h3 class="heading settled" data-level="4.3" id="integration-with-svg"><span class="secno">4.3. </span><span class="content">Integration with SVG</span><a class="self-link" href="#integration-with-svg"></a></h3>
    <p>This document modifies the <code class="idl"><a data-link-type="idl" href="https://svgwg.org/svg2-draft/interact.html#InterfaceSVGScriptElement" id="ref-for-InterfaceSVGScriptElement">SVGScriptElement</a></code> interface to enforce Trusted Types:</p>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://svgwg.org/svg2-draft/interact.html#InterfaceSVGScriptElement" id="ref-for-InterfaceSVGScriptElement①"><c- g>SVGScriptElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://svgwg.org/svg2-draft/types.html#InterfaceSVGElement" id="ref-for-InterfaceSVGElement"><c- n>SVGElement</c-></a> {
  // overwrites the definition in SVGURIReference.
- [<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②⓪"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl①①"><c- n>TrustedScriptURL</c-></a>] <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring③"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="SVGScriptElement" data-dfn-type="attribute" data-export data-readonly data-type="ScriptURLString" id="dom-svgscriptelement-href"><code><c- g>href</c-></code><a class="self-link" href="#dom-svgscriptelement-href"></a></dfn>;
+ <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring④"><c- n>ScriptURLString</c-></a> <dfn class="idl-code" data-dfn-for="SVGScriptElement" data-dfn-type="attribute" data-export data-readonly data-type="ScriptURLString" id="dom-svgscriptelement-href"><code><c- g>href</c-></code><a class="self-link" href="#dom-svgscriptelement-href"></a></dfn>;
 };
 </pre>
    <p class="issue" id="issue-41de95e8"><a class="self-link" href="#issue-41de95e8"></a> Check the text of the script when preparing it, like with HTML scripts.</p>
-   <h3 class="heading settled" data-level="4.3" id="integration-with-dom"><span class="secno">4.3. </span><span class="content">Integration with DOM</span><a class="self-link" href="#integration-with-dom"></a></h3>
+   <h3 class="heading settled" data-level="4.4" id="integration-with-dom"><span class="secno">4.4. </span><span class="content">Integration with DOM</span><a class="self-link" href="#integration-with-dom"></a></h3>
    <p>This document modifies the <code class="idl"><a data-link-type="idl" href="https://dom.spec.whatwg.org/#element" id="ref-for-element④">Element</a></code> interface, adding <a data-link-type="dfn" href="#concept-element-attributes-validation-ext" id="ref-for-concept-element-attributes-validation-ext">attribute validation steps</a>:</p>
    <p>
     <ins>This and <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#other-applicable-specifications" id="ref-for-other-applicable-specifications">other specifications</a> may define <dfn class="dfn-paneled" data-dfn-type="dfn" data-export id="concept-element-attributes-validation-ext">attribute validation steps</dfn> for <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element" id="ref-for-concept-element">elements</a>. The algorithm is passed <var>element</var>, <var>localName</var>, <var>value</var>, and <var>namespace</var>.</ins>
@@ -2999,7 +3026,7 @@ <h3 class="heading settled" data-level="4.3" id="integration-with-dom"><span cla
    </ol>
    <p>Additionally, this document changes the <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-node-append" id="ref-for-concept-node-append">append</a> an attribute algorithm:</p>
    <p>
-    To <dfn data-dfn-type="dfn" data-export data-lt="append an attribute" id="concept-element-attributes-append">append<a class="self-link" href="#concept-element-attributes-append"></a></dfn> an <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute⑤">attribute</a> <var>attribute</var> to an <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element" id="ref-for-concept-element①">element</a> <var>element</var> 
+    To <dfn data-dfn-type="dfn" data-export data-lt="append an attribute" id="concept-element-attributes-append">append<a class="self-link" href="#concept-element-attributes-append"></a></dfn> an <a data-link-type="dfn" href="https://heycam.github.io/webidl/#dfn-attribute" id="ref-for-dfn-attribute③">attribute</a> <var>attribute</var> to an <a data-link-type="dfn" href="https://dom.spec.whatwg.org/#concept-element" id="ref-for-concept-element①">element</a> <var>element</var> 
     <ins>with a <var>value</var></ins>
     , run these steps: 
    </p>
@@ -3022,32 +3049,32 @@ <h3 class="heading settled" data-level="4.3" id="integration-with-dom"><span cla
    </ol>
    <p>Callers of this algorithm are changed accordingly.</p>
    <p class="issue" id="issue-52c8f9b0"><a class="self-link" href="#issue-52c8f9b0"></a> Remove when <a href="https://github.com/whatwg/dom/pull/809">DOM #809</a> is merged.</p>
-   <h3 class="heading settled" data-level="4.4" id="integration-with-dom-parsing"><span class="secno">4.4. </span><span class="content">Integration with DOM Parsing</span><a class="self-link" href="#integration-with-dom-parsing"></a></h3>
+   <h3 class="heading settled" data-level="4.5" id="integration-with-dom-parsing"><span class="secno">4.5. </span><span class="content">Integration with DOM Parsing</span><a class="self-link" href="#integration-with-dom-parsing"></a></h3>
    <p>This document modifies the following interfaces defined by <a data-link-type="biblio" href="#biblio-dom-parsing">[DOM-Parsing]</a>:</p>
 <pre class="idl highlight def"><c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://dom.spec.whatwg.org/#element" id="ref-for-element⑤"><c- g>Element</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①⓪"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①③"><c- n>TrustedHTML</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstringdefaultsempty" id="ref-for-typedefdef-htmlstringdefaultsempty①"><c- n>HTMLStringDefaultsEmpty</c-></a> <dfn class="idl-code" data-dfn-for="Element" data-dfn-type="attribute" data-export data-type="HTMLStringDefaultsEmpty" id="dom-element-outerhtml"><code><c- g>outerHTML</c-></code><a class="self-link" href="#dom-element-outerhtml"></a></dfn>;
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①①"><c- g>CEReactions</c-></a>] <c- b>void</c-> <dfn class="idl-code" data-dfn-for="Element" data-dfn-type="method" data-export data-lt="insertAdjacentHTML(position, text)" id="dom-element-insertadjacenthtml"><code><c- g>insertAdjacentHTML</c-></code><a class="self-link" href="#dom-element-insertadjacenthtml"></a></dfn>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②③"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="Element/insertAdjacentHTML(position, text)" data-dfn-type="argument" data-export id="dom-element-insertadjacenthtml-position-text-position"><code><c- g>position</c-></code><a class="self-link" href="#dom-element-insertadjacenthtml-position-text-position"></a></dfn>, [<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②②"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①④"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring③"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="Element/insertAdjacentHTML(position, text)" data-dfn-type="argument" data-export id="dom-element-insertadjacenthtml-position-text-text"><code><c- g>text</c-></code><a class="self-link" href="#dom-element-insertadjacenthtml-position-text-text"></a></dfn>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①⓪"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs③"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring③"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="Element" data-dfn-type="attribute" data-export data-type="HTMLString" id="dom-element-outerhtml"><code><c- g>outerHTML</c-></code><a class="self-link" href="#dom-element-outerhtml"></a></dfn>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①①"><c- g>CEReactions</c-></a>] <c- b>void</c-> <dfn class="idl-code" data-dfn-for="Element" data-dfn-type="method" data-export data-lt="insertAdjacentHTML(position, text)" id="dom-element-insertadjacenthtml"><code><c- g>insertAdjacentHTML</c-></code><a class="self-link" href="#dom-element-insertadjacenthtml"></a></dfn>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⑥"><c- b>DOMString</c-></a> <dfn class="idl-code" data-dfn-for="Element/insertAdjacentHTML(position, text)" data-dfn-type="argument" data-export id="dom-element-insertadjacenthtml-position-text-position"><code><c- g>position</c-></code><a class="self-link" href="#dom-element-insertadjacenthtml-position-text-position"></a></dfn>, <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring④"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="Element/insertAdjacentHTML(position, text)" data-dfn-type="argument" data-export id="dom-element-insertadjacenthtml-position-text-text"><code><c- g>text</c-></code><a class="self-link" href="#dom-element-insertadjacenthtml-position-text-text"></a></dfn>);
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface"><c- g>InnerHTML</c-></a> { // specified in a draft version at https://w3c.github.io/DOM-Parsing/#the-innerhtml-mixin
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①②"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②③"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑤"><c- n>TrustedHTML</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstringdefaultsempty" id="ref-for-typedefdef-htmlstringdefaultsempty②"><c- n>HTMLStringDefaultsEmpty</c-></a> <dfn class="idl-code" data-dfn-for="InnerHTML" data-dfn-type="attribute" data-export data-type="HTMLStringDefaultsEmpty" id="dom-innerhtml-innerhtml"><code><c- g>innerHTML</c-></code><a class="self-link" href="#dom-innerhtml-innerhtml"></a></dfn>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①②"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs④"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑤"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="InnerHTML" data-dfn-type="attribute" data-export data-type="HTMLString" id="dom-innerhtml-innerhtml"><code><c- g>innerHTML</c-></code><a class="self-link" href="#dom-innerhtml-innerhtml"></a></dfn>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://dom.spec.whatwg.org/#range" id="ref-for-range"><c- g>Range</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①③"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#documentfragment" id="ref-for-documentfragment"><c- n>DocumentFragment</c-></a> <dfn class="idl-code" data-dfn-for="Range" data-dfn-type="method" data-export data-lt="createContextualFragment(fragment)" id="dom-range-createcontextualfragment"><code><c- g>createContextualFragment</c-></code><a class="self-link" href="#dom-range-createcontextualfragment"></a></dfn>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②④"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑥"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring④"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="Range/createContextualFragment(fragment)" data-dfn-type="argument" data-export id="dom-range-createcontextualfragment-fragment-fragment"><code><c- g>fragment</c-></code><a class="self-link" href="#dom-range-createcontextualfragment-fragment-fragment"></a></dfn>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①③"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#documentfragment" id="ref-for-documentfragment"><c- n>DocumentFragment</c-></a> <dfn class="idl-code" data-dfn-for="Range" data-dfn-type="method" data-export data-lt="createContextualFragment(fragment)" id="dom-range-createcontextualfragment"><code><c- g>createContextualFragment</c-></code><a class="self-link" href="#dom-range-createcontextualfragment"></a></dfn>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑥"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="Range/createContextualFragment(fragment)" data-dfn-type="argument" data-export id="dom-range-createcontextualfragment-fragment-fragment"><code><c- g>fragment</c-></code><a class="self-link" href="#dom-range-createcontextualfragment-fragment-fragment"></a></dfn>);
 };
 
 [<dfn class="idl-code" data-dfn-for="DOMParser" data-dfn-type="constructor" data-export data-lt="DOMParser()" id="dom-domparser-domparser"><code><c- g>Constructor</c-></code><a class="self-link" href="#dom-domparser-domparser"></a></dfn>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#Exposed" id="ref-for-Exposed⑤"><c- g>Exposed</c-></a>=<c- n>Window</c->]
 <c- b>interface</c-> <dfn class="idl-code" data-dfn-type="interface" data-export id="domparser"><code><c- g>DOMParser</c-></code><a class="self-link" href="#domparser"></a></dfn> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject①"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#document" id="ref-for-document⑤"><c- n>Document</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DOMParser" data-dfn-type="method" data-export data-lt="parseFromString(str, type)" id="dom-domparser-parsefromstring"><code><c- g>parseFromString</c-></code></dfn>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②⑤"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑦"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑤"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="DOMParser/parseFromString(str, type)" data-dfn-type="argument" data-export id="dom-domparser-parsefromstring-str-type-str"><code><c- g>str</c-></code><a class="self-link" href="#dom-domparser-parsefromstring-str-type-str"></a></dfn>, <a class="n" data-link-type="idl-name" href="https://www.w3.org/TR/DOM-Parsing/#h-the-domparser-interface" id="ref-for-h-the-domparser-interface"><c- n>SupportedType</c-></a> <dfn class="idl-code" data-dfn-for="DOMParser/parseFromString(str, type)" data-dfn-type="argument" data-export id="dom-domparser-parsefromstring-str-type-type"><code><c- g>type</c-></code><a class="self-link" href="#dom-domparser-parsefromstring-str-type-type"></a></dfn>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject①"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#document" id="ref-for-document⑤"><c- n>Document</c-></a> <dfn class="dfn-paneled idl-code" data-dfn-for="DOMParser" data-dfn-type="method" data-export data-lt="parseFromString(str, type)" id="dom-domparser-parsefromstring"><code><c- g>parseFromString</c-></code></dfn>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑦"><c- n>HTMLString</c-></a> <dfn class="idl-code" data-dfn-for="DOMParser/parseFromString(str, type)" data-dfn-type="argument" data-export id="dom-domparser-parsefromstring-str-type-str"><code><c- g>str</c-></code><a class="self-link" href="#dom-domparser-parsefromstring-str-type-str"></a></dfn>, <a class="n" data-link-type="idl-name" href="https://www.w3.org/TR/DOM-Parsing/#h-the-domparser-interface" id="ref-for-h-the-domparser-interface"><c- n>SupportedType</c-></a> <dfn class="idl-code" data-dfn-for="DOMParser/parseFromString(str, type)" data-dfn-type="argument" data-export id="dom-domparser-parsefromstring-str-type-type"><code><c- g>type</c-></code><a class="self-link" href="#dom-domparser-parsefromstring-str-type-type"></a></dfn>);
 };
 </pre>
-   <h3 class="heading settled" data-level="4.5" id="integration-with-content-security-policy"><span class="secno">4.5. </span><span class="content">Integration with Content Security Policy</span><a class="self-link" href="#integration-with-content-security-policy"></a></h3>
-   <h4 class="heading settled" data-level="4.5.1" id="require-trusted-types-for-csp-directive"><span class="secno">4.5.1. </span><span class="content"><dfn data-dfn-type="dfn" data-lt="require-trusted-types-for-directive" data-noexport id="require-trusted-types-for-directive">require-trusted-types-for<a class="self-link" href="#require-trusted-types-for-directive"></a></dfn> directive</span><a class="self-link" href="#require-trusted-types-for-csp-directive"></a></h4>
+   <h3 class="heading settled" data-level="4.6" id="integration-with-content-security-policy"><span class="secno">4.6. </span><span class="content">Integration with Content Security Policy</span><a class="self-link" href="#integration-with-content-security-policy"></a></h3>
+   <h4 class="heading settled" data-level="4.6.1" id="require-trusted-types-for-csp-directive"><span class="secno">4.6.1. </span><span class="content"><dfn data-dfn-type="dfn" data-lt="require-trusted-types-for-directive" data-noexport id="require-trusted-types-for-directive">require-trusted-types-for<a class="self-link" href="#require-trusted-types-for-directive"></a></dfn> directive</span><a class="self-link" href="#require-trusted-types-for-csp-directive"></a></h4>
    <p>This document defines <em>require-trusted-types-for</em> - a new <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directives" id="ref-for-directives①">Content Security Policy directive</a>.</p>
    <p><code class="idl"><a data-link-type="idl">require-trusted-types-for</a></code> directive configures the Trusted
-Types framework for all the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②①">injection sinks</a> of certain groups in a current <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-global-object-realm" id="ref-for-concept-global-object-realm①">realm</a>.
-Specifically, it defines what should be the behavior when a string value is passed to an <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②②">injection sink</a> of a given group (i.e. should the type-based enforcement be enabled for such sinks).</p>
+Types framework for all the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⓪">injection sinks</a> of certain groups in a current <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-global-object-realm" id="ref-for-concept-global-object-realm①">realm</a>.
+Specifically, it defines what should be the behavior when a string value is passed to an <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②①">injection sink</a> of a given group (i.e. should the type-based enforcement be enabled for such sinks).</p>
    <p class="note" role="note"><span>Note:</span> Currently, only the enforcement for <a href="#dom-xss-injection-sinks">§ 2.1.2 DOM XSS injection sinks</a> is specified.</p>
    <p>The syntax for the directive’s <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directive-name" id="ref-for-directive-name">name</a> and <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directive-value" id="ref-for-directive-value">value</a> is described by the following
 ABNF:</p>
@@ -3060,7 +3087,7 @@ <h4 class="heading settled" data-level="4.5.1" id="require-trusted-types-for-csp
 <pre class="http">Content-Security-Policy: require-trusted-types-for 'script'
 </pre>
    </div>
-   <h5 class="heading settled" data-level="4.5.1.1" id="require-trusted-types-for-pre-navigation-check"><span class="secno">4.5.1.1. </span><span class="content"><code>require-trusted-types-for</code> Pre-Navigation check</span><a class="self-link" href="#require-trusted-types-for-pre-navigation-check"></a></h5>
+   <h5 class="heading settled" data-level="4.6.1.1" id="require-trusted-types-for-pre-navigation-check"><span class="secno">4.6.1.1. </span><span class="content"><code>require-trusted-types-for</code> Pre-Navigation check</span><a class="self-link" href="#require-trusted-types-for-pre-navigation-check"></a></h5>
    <p>Given a <a data-link-type="dfn" href="https://fetch.spec.whatwg.org/#concept-request" id="ref-for-concept-request">request</a> (<var>request</var>), a string <var>navigation type</var> and a <a data-link-type="dfn">policy</a> (<var>policy</var>), this algorithm returns <code>"Blocked"</code> if a navigation violates the <code class="idl"><a data-link-type="idl">require-trusted-types-for</a></code> directive’s constraints and <code>"Allowed"</code> otherwise. This constitutes the <code class="idl"><a data-link-type="idl">require-trusted-types-for</a></code> directive’s <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directive-pre-navigation-check" id="ref-for-directive-pre-navigation-check">pre-navigation check</a>:</p>
    <p class="note" role="note"><span>Note:</span> This algorithm assures that the code to be executed by a navigation to a <code>javascript:</code> URL will have to pass through a <a data-link-type="dfn" href="#default-policy" id="ref-for-default-policy">default policy</a>’s <code>createScript</code> function, in addition to all other restrictions imposed by other CSP directives.</p>
    <ol>
@@ -3074,7 +3101,7 @@ <h5 class="heading settled" data-level="4.5.1.1" id="require-trusted-types-for-p
      <p>Let <var>convertedScriptSource</var> be the result of executing <a data-link-type="abstract-op" href="#abstract-opdef-process-value-with-a-default-policy" id="ref-for-abstract-opdef-process-value-with-a-default-policy①">Process value with a default policy</a> algorithm, with the following arguments:</p>
      <ul>
       <li data-md>
-       <p><code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①④">TrustedScript</a></code> as <var>expectedType</var></p>
+       <p><code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①①">TrustedScript</a></code> as <var>expectedType</var></p>
       <li data-md>
        <p><var>request</var>’s <a data-link-type="dfn" href="https://fetch.spec.whatwg.org/#concept-request-client" id="ref-for-concept-request-client">clients</a>'s <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-global" id="ref-for-concept-settings-object-global">global object</a> as <var>global</var></p>
       <li data-md>
@@ -3082,7 +3109,7 @@ <h5 class="heading settled" data-level="4.5.1.1" id="require-trusted-types-for-p
       <li data-md>
        <p><code>"Location.href"</code> as <var>sink</var></p>
      </ul>
-     <p>If that algorithm threw an error or <var>convertedScriptSource</var> is not a <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①⑤">TrustedScript</a></code> object, return "Blocked" and abort further steps.</p>
+     <p>If that algorithm threw an error or <var>convertedScriptSource</var> is not a <code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①②">TrustedScript</a></code> object, return "Blocked" and abort further steps.</p>
     <li data-md>
      <p>Set <var>urlString</var> to be the result of prepending <code>"javascript:"</code> to stringified <var>convertedScriptSource</var>.</p>
     <li data-md>
@@ -3094,7 +3121,7 @@ <h5 class="heading settled" data-level="4.5.1.1" id="require-trusted-types-for-p
     <li data-md>
      <p>Return <code>"Allowed"</code>.</p>
    </ol>
-   <h4 class="heading settled" data-level="4.5.2" id="trusted-types-csp-directive"><span class="secno">4.5.2. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="trusted-types-directive" data-noexport id="trusted-types-directive">trusted-types</dfn> directive</span><a class="self-link" href="#trusted-types-csp-directive"></a></h4>
+   <h4 class="heading settled" data-level="4.6.2" id="trusted-types-csp-directive"><span class="secno">4.6.2. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="dfn" data-lt="trusted-types-directive" data-noexport id="trusted-types-directive">trusted-types</dfn> directive</span><a class="self-link" href="#trusted-types-csp-directive"></a></h4>
    <p>This document defines <em>trusted-types</em> - a new <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directives" id="ref-for-directives②">Content Security Policy directive</a>. The <code class="idl"><a data-link-type="idl">trusted-types</a></code> directive controls the creation of Trusted Type <a data-link-type="dfn" href="#policies" id="ref-for-policies⑤">policies</a>.</p>
    <p>The syntax for the directive’s <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directive-name" id="ref-for-directive-name①">name</a> and <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directive-value" id="ref-for-directive-value①">value</a> is described by the following
 ABNF:</p>
@@ -3113,7 +3140,7 @@ <h4 class="heading settled" data-level="4.5.2" id="trusted-types-csp-directive">
    </div>
    <div class="example" id="header-that-allows-no-policy-names">
     <a class="self-link" href="#header-that-allows-no-policy-names"></a> An empty <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directives" id="ref-for-directives③">directive</a> <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#directive-value" id="ref-for-directive-value②">value</a> indicates policies may not be created,
-and sinks expect Trusted Type values, i.e. no DOM XSS <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②③">injection sinks</a> can be used
+and sinks expect Trusted Type values, i.e. no DOM XSS <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②②">injection sinks</a> can be used
 at all. 
 <pre class="http">Content-Security-Policy: trusted-types; require-trusted-types-for 'script'
 </pre>
@@ -3124,16 +3151,16 @@ <h4 class="heading settled" data-level="4.5.2" id="trusted-types-csp-directive">
 <pre class="http">Content-Security-Policy: trusted-types foo bar 'allow-duplicates'
 </pre>
    </div>
-   <p>If the policy named <code>default</code> is present in the list, it refers to the <a data-link-type="dfn" href="#default-policy" id="ref-for-default-policy①">default policy</a>. All strings passed to <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②④">injection sinks</a> will be passed through it instead
+   <p>If the policy named <code>default</code> is present in the list, it refers to the <a data-link-type="dfn" href="#default-policy" id="ref-for-default-policy①">default policy</a>. All strings passed to <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②③">injection sinks</a> will be passed through it instead
 of being rejected outright.</p>
    <div class="example" id="default-in-header">
     <a class="self-link" href="#default-in-header"></a> 
 <pre class="http">Content-Security-Policy: trusted-types one two default
 </pre>
    </div>
-   <h4 class="heading settled" data-level="4.5.3" id="should-block-sink-type-mismatch"><span class="secno">4.5.3. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-should-sink-type-mismatch-violation-be-blocked-by-content-security-policy">Should sink type mismatch violation be blocked by Content Security Policy?</dfn></span><a class="self-link" href="#should-block-sink-type-mismatch"></a></h4>
+   <h4 class="heading settled" data-level="4.6.3" id="should-block-sink-type-mismatch"><span class="secno">4.6.3. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-should-sink-type-mismatch-violation-be-blocked-by-content-security-policy">Should sink type mismatch violation be blocked by Content Security Policy?</dfn></span><a class="self-link" href="#should-block-sink-type-mismatch"></a></h4>
    <p>Given a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-realm-global" id="ref-for-concept-realm-global③">global object</a> (<var>global</var>), a string (<var>sink</var>), a string (<var>sinkGroup</var>) and a string (<var>source</var>) this algorithm
-returns <code>"Blocked"</code> if the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑤">injection sink</a> requires a <a data-link-type="dfn" href="#trusted-type" id="ref-for-trusted-type⑤">Trusted Type</a>, and <code>"Allowed"</code> otherwise.</p>
+returns <code>"Blocked"</code> if the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②④">injection sink</a> requires a <a data-link-type="dfn" href="#trusted-type" id="ref-for-trusted-type⑤">Trusted Type</a>, and <code>"Allowed"</code> otherwise.</p>
    <ol>
     <li data-md>
      <p>Let <var>result</var> be <code>"Allowed"</code>.</p>
@@ -3155,7 +3182,7 @@ <h4 class="heading settled" data-level="4.5.3" id="should-block-sink-type-mismat
       <li data-md>
        <p>Let <var>trimmedSource</var> be the substring of <var>source</var>, containing its first 40 characters.</p>
       <li data-md>
-       <p>Set <var>violation</var>’s <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#violation-sample" id="ref-for-violation-sample">sample</a> to be the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate③">concatenating</a> the list « <var>sink</var>, <var>trimmedSource</var> « using <code>"|"</code> as a <var>separator</var>.</p>
+       <p>Set <var>violation</var>’s <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#violation-sample" id="ref-for-violation-sample">sample</a> to be the result of <a data-link-type="dfn" href="https://infra.spec.whatwg.org/#string-concatenate" id="ref-for-string-concatenate②">concatenating</a> the list « <var>sink</var>, <var>trimmedSource</var> « using <code>"|"</code> as a <var>separator</var>.</p>
       <li data-md>
        <p>Execute <a href="https://www.w3.org/TR/CSP3/#report-violation">Report a violation</a> on <var>violation</var>.</p>
       <li data-md>
@@ -3164,7 +3191,7 @@ <h4 class="heading settled" data-level="4.5.3" id="should-block-sink-type-mismat
     <li data-md>
      <p>Return <var>result</var>.</p>
    </ol>
-   <h4 class="heading settled" data-level="4.5.4" id="should-block-create-policy"><span class="secno">4.5.4. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-should-trusted-type-policy-creation-be-blocked-by-content-security-policy">Should Trusted Type policy creation be blocked by Content Security Policy?</dfn></span><a class="self-link" href="#should-block-create-policy"></a></h4>
+   <h4 class="heading settled" data-level="4.6.4" id="should-block-create-policy"><span class="secno">4.6.4. </span><span class="content"><dfn class="dfn-paneled" data-dfn-type="abstract-op" data-export id="abstract-opdef-should-trusted-type-policy-creation-be-blocked-by-content-security-policy">Should Trusted Type policy creation be blocked by Content Security Policy?</dfn></span><a class="self-link" href="#should-block-create-policy"></a></h4>
    <p>Given a <a data-link-type="dfn" href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-realm-global" id="ref-for-concept-realm-global④">global object</a> (<var>global</var>), a string (<var>policyName</var>) and a list of
 strings (<var>createdPolicyNames</var>), this algorithm returns <code>"Blocked"</code> if the <a data-link-type="dfn">Trusted Type Policy</a> should not be created, and <code>"Allowed"</code> otherwise.</p>
    <ol>
@@ -3205,9 +3232,9 @@ <h4 class="heading settled" data-level="4.5.4" id="should-block-create-policy"><
     <li data-md>
      <p>Return <var>result</var>.</p>
    </ol>
-   <h4 class="heading settled" data-level="4.5.5" id="csp-violation-object-hdr"><span class="secno">4.5.5. </span><span class="content">Violation object changes</span><a class="self-link" href="#csp-violation-object-hdr"></a></h4>
+   <h4 class="heading settled" data-level="4.6.5" id="csp-violation-object-hdr"><span class="secno">4.6.5. </span><span class="content">Violation object changes</span><a class="self-link" href="#csp-violation-object-hdr"></a></h4>
    <p><a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#violation" id="ref-for-violation">Violation</a> object <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#violation-resource" id="ref-for-violation-resource②">resource</a> also allows <code>"trusted-types-policy"</code> and <code>"trusted-types-sink"</code> as values.</p>
-   <h4 class="heading settled" data-level="4.5.6" id="csp-eval"><span class="secno">4.5.6. </span><span class="content">Support for eval(TrustedScript)</span><a class="self-link" href="#csp-eval"></a></h4>
+   <h4 class="heading settled" data-level="4.6.6" id="csp-eval"><span class="secno">4.6.6. </span><span class="content">Support for eval(TrustedScript)</span><a class="self-link" href="#csp-eval"></a></h4>
    <p>This document modifies the <a href="https://www.w3.org/TR/CSP3/#can-compile-strings">EnsureCSPDoesNotBlockStringCompilation</a> which is reproduced in its entirety below with additions and deletions.</p>
    <p class="note" role="note"><span>Note:</span> See <a href="https://github.com/tc39/ecma262/issues/938">TC39/ecma262 issue #938</a> (adding the value to be compiled to algorithm parameters).</p>
    <div class="note" role="note">
@@ -3238,7 +3265,7 @@ <h4 class="heading settled" data-level="4.5.6" id="csp-eval"><span class="secno"
    <ol>
     <li data-md>
      <ins>
-      Let <var>sourceString</var> be the result of executing the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑦">Get Trusted Type compliant string</a> algorithm, with: 
+      Let <var>sourceString</var> be the result of executing the <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑥">Get Trusted Type compliant string</a> algorithm, with: 
       <ul>
        <li data-md>
         <p><var>calleeRealm</var> as <var>global</var>,</p>
@@ -3249,7 +3276,7 @@ <h4 class="heading settled" data-level="4.5.6" id="csp-eval"><span class="secno"
        <li data-md>
         <p><code>'script'</code> as <var>sinkGroup</var>,</p>
        <li data-md>
-        <p><code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①⑥">TrustedScript</a></code> as <var>expectedType</var>.</p>
+        <p><code class="idl"><a data-link-type="idl" href="#trustedscript" id="ref-for-trustedscript①③">TrustedScript</a></code> as <var>expectedType</var>.</p>
       </ul>
      </ins>
     <li data-md>
@@ -3304,7 +3331,7 @@ <h4 class="heading settled" data-level="4.5.6" id="csp-eval"><span class="secno"
    </ol>
    <p class="note" role="note"><span>Note:</span> returning <var>sourceString</var> means that the string that gets
 compiled is that returned by any <a data-link-type="dfn" href="#default-policy" id="ref-for-default-policy②">default policy</a> in the course of
-executing <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑧">Get Trusted Type compliant string</a>.</p>
+executing <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑦">Get Trusted Type compliant string</a>.</p>
    <p class="issue" id="issue-e28ea232"><a class="self-link" href="#issue-e28ea232"></a> This depends on a solution to <a href="https://github.com/w3c/webappsec-trusted-types/issues/144">issue #144</a> like <a href="https://github.com/tc39-transfer/dynamic-code-brand-checks#problem-host-callout-does-not-receive-type-information">TC39 HostBeforeCompile</a></p>
    <p class="issue" id="issue-649f8da4"><a class="self-link" href="#issue-649f8da4"></a> In some cases, the violation "<code>'report-sample'</code>" contain the result of
 applying the default policy to a string argument which differs.
@@ -3312,10 +3339,10 @@ <h4 class="heading settled" data-level="4.5.6" id="csp-eval"><span class="secno"
 and <var>source</var> there is a CSP policy for either the <var>callerRealm</var> or <var>callerRealm</var> that disallows "<code>'unsafe-eval'"</code>.
 Is this a feature or a bug?</p>
    <p class="note" role="note"><span>Note:</span> The previous algorithm reports violations via both report-uris where
-callerRealm != calleeRealm.  If <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑨">Get Trusted Type compliant string</a> reports an
+callerRealm != calleeRealm.  If <a data-link-type="abstract-op" href="#abstract-opdef-get-trusted-type-compliant-string" id="ref-for-abstract-opdef-get-trusted-type-compliant-string⑧">Get Trusted Type compliant string</a> reports an
 error, it only reports it via its <var>calleeRealm</var>’s report-uri.</p>
    <h2 class="heading settled" data-level="5" id="security-considerations"><span class="secno">5. </span><span class="content">Security Considerations</span><a class="self-link" href="#security-considerations"></a></h2>
-   <p>Trusted Types are not intended to protect access to <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑥">injection sinks</a> in an
+   <p>Trusted Types are not intended to protect access to <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑤">injection sinks</a> in an
 actively malicious execution environment. It’s assumed that the application is
 written by non-malicious authors; the intent is to prevent developer mistakes
 that could result in security bugs, and not to defend against first-party
@@ -3344,16 +3371,16 @@ <h3 class="heading settled" data-level="5.2" id="deprecated-features"><span clas
    <h3 class="heading settled" data-level="5.3" id="plugins"><span class="secno">5.3. </span><span class="content">Plugin navigation</span><a class="self-link" href="#plugins"></a></h3>
    <p>Plugin content may have access to the document that embeds it (or; more broadly,
 to the origin it was served from), often giving it the same capabilities
-as DOM XSS. That’s why Trusted Types limit <code class="idl"><a data-link-type="idl">HTMLObjectElement.src</a></code> to <code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl①②">TrustedScriptURL</a></code>.</p>
+as DOM XSS. That’s why Trusted Types limit <code class="idl"><a data-link-type="idl">HTMLObjectElement.src</a></code> to <code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl⑦">TrustedScriptURL</a></code>.</p>
    <p>However, it is also possible to navigate an existing object / embed to an
-arbitrary location, bypassing the <code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl①③">TrustedScriptURL</a></code> restriction.</p>
+arbitrary location, bypassing the <code class="idl"><a data-link-type="idl" href="#trustedscripturl" id="ref-for-trustedscripturl⑧">TrustedScriptURL</a></code> restriction.</p>
    <p>Since plugin content in the web in general is being phased out for other
 security reasons, and their navigation model is in flux, we recommend authors
 to prevent that bypass vector by limiting the plugins altogether with <a data-link-type="dfn" href="https://w3c.github.io/webappsec-csp/#object-src" id="ref-for-object-src">object-src</a>. For example: <code>Content-Security-Policy: object-src: none</code>.</p>
    <h3 class="heading settled" data-level="5.4" id="best-practices-for-policy-design"><span class="secno">5.4. </span><span class="content">Best practices for policy design</span><a class="self-link" href="#best-practices-for-policy-design"></a></h3>
    <p>Trusted Types limit the scope of the code that can introduce
-vulnerabilities via <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑦">injection sinks</a> to the implementation of <a data-link-type="dfn" href="#policies" id="ref-for-policies⑥">policies</a>.
-In this design, insecure policies can still expose <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑧">injection sinks</a> to untrusted data.
+vulnerabilities via <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑥">injection sinks</a> to the implementation of <a data-link-type="dfn" href="#policies" id="ref-for-policies⑥">policies</a>.
+In this design, insecure policies can still expose <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑦">injection sinks</a> to untrusted data.
 Special emphasis needs to be taken by use policies that are either secure for all
 possible inputs, or limit the access to insecure policies, such that they are only
 called with non-attacker controlled inputs.</p>
@@ -3369,7 +3396,7 @@ <h3 class="heading settled" data-level="6.1" id="vendor-specific-extensions-and-
 NOT interfere with the operation of user-agent features like addons,
 extensions, or bookmarklets. These kinds of features generally advance
 the user’s priority over page authors, as espoused in <a data-link-type="biblio" href="#biblio-html-design-principles">[html-design-principles]</a>. Specifically, extensions SHOULD be able to pass strings
-to the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑨">injection sinks</a> without triggering <a data-link-type="dfn" href="#default-policy" id="ref-for-default-policy④">default policy</a> execution, violation generation, or the rejection of the value.</p>
+to the <a data-link-type="dfn" href="#injection-sink" id="ref-for-injection-sink②⑧">injection sinks</a> without triggering <a data-link-type="dfn" href="#default-policy" id="ref-for-default-policy④">default policy</a> execution, violation generation, or the rejection of the value.</p>
   </main>
   <h2 class="no-ref no-num heading settled" id="conformance"><span class="content">Conformance</span><a class="self-link" href="#conformance"></a></h2>
   <h3 class="no-ref no-num heading settled" id="conventions"><span class="content">Document conventions</span><a class="self-link" href="#conventions"></a></h3>
@@ -3406,12 +3433,13 @@ <h3 class="no-ref no-num heading settled" id="conformant-algorithms"><span class
   <h2 class="no-num no-ref heading settled" id="index"><span class="content">Index</span><a class="self-link" href="#index"></a></h2>
   <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="content">Terms defined by this specification</span><a class="self-link" href="#index-defined-here"></a></h3>
   <ul class="index">
-   <li><a href="#concept-element-attributes-append">append an attribute</a><span>, in §4.3</span>
-   <li><a href="#concept-element-attributes-validation-ext">attribute validation steps</a><span>, in §4.3</span>
-   <li><a href="#dom-htmlobjectelement-codebase">codeBase</a><span>, in §4.1.4</span>
+   <li><a href="#concept-element-attributes-append">append an attribute</a><span>, in §4.4</span>
+   <li><a href="#extended-attributes-applicable-to-types">applicable to types</a><span>, in §4.1.2</span>
+   <li><a href="#concept-element-attributes-validation-ext">attribute validation steps</a><span>, in §4.4</span>
+   <li><a href="#dom-htmlobjectelement-codebase">codeBase</a><span>, in §4.2.4</span>
    <li><a href="#abstract-opdef-create-a-trusted-type">Create a Trusted Type</a><span>, in §3.2</span>
    <li><a href="#abstract-opdef-create-a-trusted-type-policy">Create a Trusted Type Policy</a><span>, in §3.1</span>
-   <li><a href="#dom-range-createcontextualfragment">createContextualFragment(fragment)</a><span>, in §4.4</span>
+   <li><a href="#dom-range-createcontextualfragment">createContextualFragment(fragment)</a><span>, in §4.5</span>
    <li><a href="#dom-trustedtypepolicyoptions-createhtml">createHTML</a><span>, in §2.3.3</span>
    <li><a href="#callbackdef-createhtmlcallback">CreateHTMLCallback</a><span>, in §2.3.3</span>
    <li><a href="#dom-trustedtypepolicy-createhtml">createHTML(input)</a><span>, in §2.3.2</span>
@@ -3426,11 +3454,11 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#callbackdef-createscripturlcallback">CreateScriptURLCallback</a><span>, in §2.3.3</span>
    <li><a href="#dom-trustedtypepolicy-createscripturl">createScriptURL(input)</a><span>, in §2.3.2</span>
    <li><a href="#dom-trustedtypepolicy-createscripturl">createScriptURL(input, ...arguments)</a><span>, in §2.3.2</span>
-   <li><a href="#dom-htmlobjectelement-data">data</a><span>, in §4.1.4</span>
+   <li><a href="#dom-htmlobjectelement-data">data</a><span>, in §4.2.4</span>
    <li><a href="#default-policy">Default policy</a><span>, in §2.3.4</span>
    <li><a href="#dom-trustedtypepolicyfactory-defaultpolicy">defaultPolicy</a><span>, in §2.3.1</span>
-   <li><a href="#dom-domparser-domparser">DOMParser()</a><span>, in §4.4</span>
-   <li><a href="#domparser">DOMParser</a><span>, in §4.4</span>
+   <li><a href="#dom-domparser-domparser">DOMParser()</a><span>, in §4.5</span>
+   <li><a href="#domparser">DOMParser</a><span>, in §4.5</span>
    <li><a href="#dom-trustedtypepolicyfactory-emptyhtml">emptyHTML</a><span>, in §2.3.1</span>
    <li><a href="#dom-trustedtypepolicyfactory-emptyscript">emptyScript</a><span>, in §2.3.1</span>
    <li><a href="#enforcement">Enforcement</a><span>, in §2.4</span>
@@ -3440,51 +3468,51 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <li><a href="#dom-trustedtypepolicyfactory-getpropertytype">getPropertyType(tagName, property)</a><span>, in §2.3.1</span>
    <li><a href="#dom-trustedtypepolicyfactory-getpropertytype">getPropertyType(tagName, property, elementNs)</a><span>, in §2.3.1</span>
    <li><a href="#abstract-opdef-get-trusted-type-compliant-string">Get Trusted Type compliant string</a><span>, in §3.3</span>
-   <li><a href="#dom-svgscriptelement-href">href</a><span>, in §4.2</span>
+   <li><a href="#dom-svgscriptelement-href">href</a><span>, in §4.3</span>
    <li><a href="#typedefdef-htmlstring">HTMLString</a><span>, in §4</span>
-   <li><a href="#typedefdef-htmlstringdefaultsempty">HTMLStringDefaultsEmpty</a><span>, in §4</span>
    <li><a href="#injection-sink">injection sink</a><span>, in §2.1</span>
-   <li><a href="#dom-innerhtml-innerhtml">innerHTML</a><span>, in §4.4</span>
-   <li><a href="#dom-htmlscriptelement-innertext">innerText</a><span>, in §4.1.3.2</span>
-   <li><a href="#dom-element-insertadjacenthtml">insertAdjacentHTML(position, text)</a><span>, in §4.4</span>
+   <li><a href="#dom-innerhtml-innerhtml">innerHTML</a><span>, in §4.5</span>
+   <li><a href="#dom-htmlscriptelement-innertext">innerText</a><span>, in §4.2.3.2</span>
+   <li><a href="#dom-element-insertadjacenthtml">insertAdjacentHTML(position, text)</a><span>, in §4.5</span>
    <li><a href="#dom-trustedtypepolicyfactory-ishtml">isHTML(value)</a><span>, in §2.3.1</span>
    <li><a href="#dom-trustedtypepolicyfactory-isscripturl">isScriptURL(value)</a><span>, in §2.3.1</span>
    <li><a href="#dom-trustedtypepolicyfactory-isscript">isScript(value)</a><span>, in §2.3.1</span>
-   <li><a href="#list-of-scripts-that-will-execute-in-order-as-soon-as-possible">list of scripts that will execute in order as soon as possible</a><span>, in §4.1.3.3</span>
-   <li><a href="#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the document has finished parsing</a><span>, in §4.1.3.3</span>
+   <li><a href="#list-of-scripts-that-will-execute-in-order-as-soon-as-possible">list of scripts that will execute in order as soon as possible</a><span>, in §4.2.3.3</span>
+   <li><a href="#list-of-scripts-that-will-execute-when-the-document-has-finished-parsing">list of scripts that will execute when the document has finished parsing</a><span>, in §4.2.3.3</span>
    <li>
     name
     <ul>
      <li><a href="#dom-trustedtypepolicy-name">attribute for TrustedTypePolicy</a><span>, in §2.3.2</span>
      <li><a href="#trustedtypepolicy-name">dfn for TrustedTypePolicy</a><span>, in §2.3.2</span>
     </ul>
-   <li><a href="#dom-element-outerhtml">outerHTML</a><span>, in §4.4</span>
-   <li><a href="#dom-domparser-parsefromstring">parseFromString(str, type)</a><span>, in §4.4</span>
+   <li><a href="#dom-element-outerhtml">outerHTML</a><span>, in §4.5</span>
+   <li><a href="#dom-domparser-parsefromstring">parseFromString(str, type)</a><span>, in §4.5</span>
    <li><a href="#policies">Policies</a><span>, in §2.3</span>
    <li><a href="#abstract-opdef-prepare-the-script-url-and-text">Prepare the script URL and text</a><span>, in §3.5</span>
    <li><a href="#abstract-opdef-process-value-with-a-default-policy">Process value with a default policy</a><span>, in §3.4</span>
-   <li><a href="#require-trusted-types-for-directive">require-trusted-types-for-directive</a><span>, in §4.5.1</span>
+   <li><a href="#related-construct">related construct</a><span>, in §4.1.1</span>
+   <li><a href="#require-trusted-types-for-directive">require-trusted-types-for-directive</a><span>, in §4.6.1</span>
    <li><a href="#typedefdef-scriptstring">ScriptString</a><span>, in §4</span>
-   <li><a href="#script-scripttext">[[ScriptText]]</a><span>, in §4.1.3.1</span>
-   <li><a href="#script-scripturl">[[ScriptURL]]</a><span>, in §4.1.3.1</span>
+   <li><a href="#script-scripttext">[[ScriptText]]</a><span>, in §4.2.3.1</span>
+   <li><a href="#script-scripturl">[[ScriptURL]]</a><span>, in §4.2.3.1</span>
    <li><a href="#typedefdef-scripturlstring">ScriptURLString</a><span>, in §4</span>
-   <li><a href="#serialized-tt-configuration">serialized-tt-configuration</a><span>, in §4.5.2</span>
-   <li><a href="#dom-windoworworkerglobalscope-setinterval">setInterval(handler)</a><span>, in §4.1.5</span>
-   <li><a href="#dom-windoworworkerglobalscope-setinterval">setInterval(handler, timeout)</a><span>, in §4.1.5</span>
-   <li><a href="#dom-windoworworkerglobalscope-setinterval">setInterval(handler, timeout, ...arguments)</a><span>, in §4.1.5</span>
-   <li><a href="#set-of-scripts-that-will-execute-as-soon-as-possible">set of scripts that will execute as soon as possible</a><span>, in §4.1.3.3</span>
-   <li><a href="#dom-windoworworkerglobalscope-settimeout">setTimeout(handler)</a><span>, in §4.1.5</span>
-   <li><a href="#dom-windoworworkerglobalscope-settimeout">setTimeout(handler, timeout)</a><span>, in §4.1.5</span>
-   <li><a href="#dom-windoworworkerglobalscope-settimeout">setTimeout(handler, timeout, ...arguments)</a><span>, in §4.1.5</span>
-   <li><a href="#abstract-opdef-should-sink-type-mismatch-violation-be-blocked-by-content-security-policy">Should sink type mismatch violation be blocked by Content Security Policy?</a><span>, in §4.5.3</span>
-   <li><a href="#abstract-opdef-should-trusted-type-policy-creation-be-blocked-by-content-security-policy">Should Trusted Type policy creation be blocked by Content Security Policy?</a><span>, in §4.5.4</span>
+   <li><a href="#serialized-tt-configuration">serialized-tt-configuration</a><span>, in §4.6.2</span>
+   <li><a href="#dom-windoworworkerglobalscope-setinterval">setInterval(handler)</a><span>, in §4.2.5</span>
+   <li><a href="#dom-windoworworkerglobalscope-setinterval">setInterval(handler, timeout)</a><span>, in §4.2.5</span>
+   <li><a href="#dom-windoworworkerglobalscope-setinterval">setInterval(handler, timeout, ...arguments)</a><span>, in §4.2.5</span>
+   <li><a href="#set-of-scripts-that-will-execute-as-soon-as-possible">set of scripts that will execute as soon as possible</a><span>, in §4.2.3.3</span>
+   <li><a href="#dom-windoworworkerglobalscope-settimeout">setTimeout(handler)</a><span>, in §4.2.5</span>
+   <li><a href="#dom-windoworworkerglobalscope-settimeout">setTimeout(handler, timeout)</a><span>, in §4.2.5</span>
+   <li><a href="#dom-windoworworkerglobalscope-settimeout">setTimeout(handler, timeout, ...arguments)</a><span>, in §4.2.5</span>
+   <li><a href="#abstract-opdef-should-sink-type-mismatch-violation-be-blocked-by-content-security-policy">Should sink type mismatch violation be blocked by Content Security Policy?</a><span>, in §4.6.3</span>
+   <li><a href="#abstract-opdef-should-trusted-type-policy-creation-be-blocked-by-content-security-policy">Should Trusted Type policy creation be blocked by Content Security Policy?</a><span>, in §4.6.4</span>
    <li>
     src
     <ul>
-     <li><a href="#dom-htmlembedelement-src">attribute for HTMLEmbedElement</a><span>, in §4.1.4</span>
-     <li><a href="#dom-htmlscriptelement-src">attribute for HTMLScriptElement</a><span>, in §4.1.3.2</span>
+     <li><a href="#dom-htmlembedelement-src">attribute for HTMLEmbedElement</a><span>, in §4.2.4</span>
+     <li><a href="#dom-htmlscriptelement-src">attribute for HTMLScriptElement</a><span>, in §4.2.3.2</span>
     </ul>
-   <li><a href="#dom-htmliframeelement-srcdoc">srcdoc</a><span>, in §4.1.4</span>
+   <li><a href="#dom-htmliframeelement-srcdoc">srcdoc</a><span>, in §4.2.4</span>
    <li>
     stringification behavior
     <ul>
@@ -3492,8 +3520,8 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
      <li><a href="#TrustedScript-stringification-behavior">dfn for TrustedScript</a><span>, in §2.2.2</span>
      <li><a href="#TrustedScriptURL-stringification-behavior">dfn for TrustedScriptURL</a><span>, in §2.2.3</span>
     </ul>
-   <li><a href="#dom-htmlscriptelement-text">text</a><span>, in §4.1.3.2</span>
-   <li><a href="#dom-htmlscriptelement-textcontent">textContent</a><span>, in §4.1.3.2</span>
+   <li><a href="#dom-htmlscriptelement-text">text</a><span>, in §4.2.3.2</span>
+   <li><a href="#dom-htmlscriptelement-textcontent">textContent</a><span>, in §4.2.3.2</span>
    <li>
     TrustedHTML
     <ul>
@@ -3512,7 +3540,7 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
      <li><a href="#trustedscripturl">(interface)</a><span>, in §2.2.3</span>
      <li><a href="#typedef-trustedscripturl">(type)</a><span>, in §2.2.3</span>
     </ul>
-   <li><a href="#typedefdef-trustedtimerhandler">TrustedTimerHandler</a><span>, in §4.1.5</span>
+   <li><a href="#typedefdef-trustedtimerhandler">TrustedTimerHandler</a><span>, in §4.2.5</span>
    <li><a href="#typedefdef-trustedtype">TrustedType</a><span>, in §4</span>
    <li><a href="#trusted-type">Trusted Type</a><span>, in §2.2</span>
    <li>
@@ -3527,36 +3555,36 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
      <li><a href="#trustedtypepolicyfactory">(interface)</a><span>, in §2.3.1</span>
      <li><a href="#typedef-trustedtypepolicyfactory">(type)</a><span>, in §2.3.1</span>
     </ul>
-   <li><a href="#window-trusted-type-policy-factory">trusted type policy factory</a><span>, in §4.1</span>
+   <li><a href="#window-trusted-type-policy-factory">trusted type policy factory</a><span>, in §4.2</span>
    <li>
     TrustedTypePolicyOptions
     <ul>
      <li><a href="#dictdef-trustedtypepolicyoptions">(dictionary)</a><span>, in §2.3.3</span>
      <li><a href="#typedef-trustedtypepolicyoptions">(type)</a><span>, in §2.3.3</span>
     </ul>
-   <li><a href="#extendedattrdef-trustedtypes">TrustedTypes</a><span>, in §2.4.2</span>
-   <li><a href="#dom-window-trustedtypes">trustedTypes</a><span>, in §4.1.1</span>
-   <li><a href="#trusted-types-directive">trusted-types-directive</a><span>, in §4.5.2</span>
-   <li><a href="#trusted-types-sink-group">trusted-types-sink-group</a><span>, in §4.5.1</span>
-   <li><a href="#tt-expression">tt-expression</a><span>, in §4.5.2</span>
-   <li><a href="#tt-keyword">tt-keyword</a><span>, in §4.5.2</span>
-   <li><a href="#tt-policy-name">tt-policy-name</a><span>, in §4.5.2</span>
-   <li><a href="#tt-wildcard">tt-wildcard</a><span>, in §4.5.2</span>
-   <li><a href="#dom-document-write">write()</a><span>, in §4.1.2</span>
-   <li><a href="#dom-document-writeln">writeln()</a><span>, in §4.1.2</span>
-   <li><a href="#dom-document-writeln">writeln(...text)</a><span>, in §4.1.2</span>
-   <li><a href="#dom-document-write">write(...text)</a><span>, in §4.1.2</span>
+   <li><a href="#dom-window-trustedtypes">trustedTypes</a><span>, in §4.2.1</span>
+   <li><a href="#trusted-types-directive">trusted-types-directive</a><span>, in §4.6.2</span>
+   <li><a href="#trusted-types-sink-group">trusted-types-sink-group</a><span>, in §4.6.1</span>
+   <li><a href="#tt-expression">tt-expression</a><span>, in §4.6.2</span>
+   <li><a href="#tt-keyword">tt-keyword</a><span>, in §4.6.2</span>
+   <li><a href="#tt-policy-name">tt-policy-name</a><span>, in §4.6.2</span>
+   <li><a href="#tt-wildcard">tt-wildcard</a><span>, in §4.6.2</span>
+   <li><a href="#dfn-validate-the-string-in-context">validate the string in context</a><span>, in §4.1.4</span>
+   <li><a href="#dom-document-write">write()</a><span>, in §4.2.2</span>
+   <li><a href="#dom-document-writeln">writeln()</a><span>, in §4.2.2</span>
+   <li><a href="#dom-document-writeln">writeln(...text)</a><span>, in §4.2.2</span>
+   <li><a href="#dom-document-write">write(...text)</a><span>, in §4.2.2</span>
   </ul>
   <aside class="dfn-panel" data-for="term-for-grammardef-report-sample">
    <a href="https://w3c.github.io/webappsec-csp/#grammardef-report-sample">https://w3c.github.io/webappsec-csp/#grammardef-report-sample</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-grammardef-report-sample">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-grammardef-report-sample">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-grammardef-unsafe-eval">
    <a href="https://w3c.github.io/webappsec-csp/#grammardef-unsafe-eval">https://w3c.github.io/webappsec-csp/#grammardef-unsafe-eval</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-grammardef-unsafe-eval">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-grammardef-unsafe-eval">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-content-security-policy-object">
@@ -3568,49 +3596,49 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-global-object-csp-list">
    <a href="https://w3c.github.io/webappsec-csp/#global-object-csp-list">https://w3c.github.io/webappsec-csp/#global-object-csp-list</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-global-object-csp-list">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-global-object-csp-list">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-policy-directive-set">
    <a href="https://w3c.github.io/webappsec-csp/#policy-directive-set">https://w3c.github.io/webappsec-csp/#policy-directive-set</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-policy-directive-set">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-policy-directive-set①">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-policy-directive-set②">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-policy-directive-set①">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-policy-directive-set②">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-directives">
    <a href="https://w3c.github.io/webappsec-csp/#directives">https://w3c.github.io/webappsec-csp/#directives</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-directives">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-directives①">4.5.1. require-trusted-types-for directive</a>
-    <li><a href="#ref-for-directives②">4.5.2. trusted-types directive</a> <a href="#ref-for-directives③">(2)</a>
-    <li><a href="#ref-for-directives④">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a> <a href="#ref-for-directives⑤">(2)</a>
-    <li><a href="#ref-for-directives⑥">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a> <a href="#ref-for-directives⑦">(2)</a>
-    <li><a href="#ref-for-directives⑧">4.5.6. Support for eval(TrustedScript)</a> <a href="#ref-for-directives⑨">(2)</a> <a href="#ref-for-directives①⓪">(3)</a>
+    <li><a href="#ref-for-directives①">4.6.1. require-trusted-types-for directive</a>
+    <li><a href="#ref-for-directives②">4.6.2. trusted-types directive</a> <a href="#ref-for-directives③">(2)</a>
+    <li><a href="#ref-for-directives④">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a> <a href="#ref-for-directives⑤">(2)</a>
+    <li><a href="#ref-for-directives⑥">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a> <a href="#ref-for-directives⑦">(2)</a>
+    <li><a href="#ref-for-directives⑧">4.6.6. Support for eval(TrustedScript)</a> <a href="#ref-for-directives⑨">(2)</a> <a href="#ref-for-directives①⓪">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-policy-disposition">
    <a href="https://w3c.github.io/webappsec-csp/#policy-disposition">https://w3c.github.io/webappsec-csp/#policy-disposition</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-policy-disposition">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-policy-disposition①">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-policy-disposition②">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-policy-disposition">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-policy-disposition①">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-policy-disposition②">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-directive-inline-check">
    <a href="https://w3c.github.io/webappsec-csp/#directive-inline-check">https://w3c.github.io/webappsec-csp/#directive-inline-check</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-directive-inline-check">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-directive-inline-check">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-directive-name">
    <a href="https://w3c.github.io/webappsec-csp/#directive-name">https://w3c.github.io/webappsec-csp/#directive-name</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-directive-name">4.5.1. require-trusted-types-for directive</a>
-    <li><a href="#ref-for-directive-name①">4.5.2. trusted-types directive</a>
-    <li><a href="#ref-for-directive-name②">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-directive-name③">4.5.6. Support for eval(TrustedScript)</a> <a href="#ref-for-directive-name④">(2)</a>
+    <li><a href="#ref-for-directive-name">4.6.1. require-trusted-types-for directive</a>
+    <li><a href="#ref-for-directive-name①">4.6.2. trusted-types directive</a>
+    <li><a href="#ref-for-directive-name②">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-directive-name③">4.6.6. Support for eval(TrustedScript)</a> <a href="#ref-for-directive-name④">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-object-src">
@@ -3622,24 +3650,24 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-directive-pre-navigation-check">
    <a href="https://w3c.github.io/webappsec-csp/#directive-pre-navigation-check">https://w3c.github.io/webappsec-csp/#directive-pre-navigation-check</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-directive-pre-navigation-check">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-directive-pre-navigation-check">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-violation-resource">
    <a href="https://w3c.github.io/webappsec-csp/#violation-resource">https://w3c.github.io/webappsec-csp/#violation-resource</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-violation-resource">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-violation-resource①">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-violation-resource②">4.5.5. Violation object changes</a>
-    <li><a href="#ref-for-violation-resource③">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-violation-resource">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-violation-resource①">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-violation-resource②">4.6.5. Violation object changes</a>
+    <li><a href="#ref-for-violation-resource③">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-violation-sample">
    <a href="https://w3c.github.io/webappsec-csp/#violation-sample">https://w3c.github.io/webappsec-csp/#violation-sample</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-violation-sample">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-violation-sample①">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-violation-sample②">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-violation-sample">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-violation-sample①">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-violation-sample②">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-script-src">
@@ -3651,23 +3679,31 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-source-expression">
    <a href="https://w3c.github.io/webappsec-csp/#source-expression">https://w3c.github.io/webappsec-csp/#source-expression</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-source-expression">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-source-expression">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-directive-value">
    <a href="https://w3c.github.io/webappsec-csp/#directive-value">https://w3c.github.io/webappsec-csp/#directive-value</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-directive-value">4.5.1. require-trusted-types-for directive</a>
-    <li><a href="#ref-for-directive-value①">4.5.2. trusted-types directive</a> <a href="#ref-for-directive-value②">(2)</a>
-    <li><a href="#ref-for-directive-value③">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-directive-value④">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a> <a href="#ref-for-directive-value⑤">(2)</a> <a href="#ref-for-directive-value⑥">(3)</a>
-    <li><a href="#ref-for-directive-value⑦">4.5.6. Support for eval(TrustedScript)</a> <a href="#ref-for-directive-value⑧">(2)</a>
+    <li><a href="#ref-for-directive-value">4.6.1. require-trusted-types-for directive</a>
+    <li><a href="#ref-for-directive-value①">4.6.2. trusted-types directive</a> <a href="#ref-for-directive-value②">(2)</a>
+    <li><a href="#ref-for-directive-value③">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-directive-value④">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a> <a href="#ref-for-directive-value⑤">(2)</a> <a href="#ref-for-directive-value⑥">(3)</a>
+    <li><a href="#ref-for-directive-value⑦">4.6.6. Support for eval(TrustedScript)</a> <a href="#ref-for-directive-value⑧">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-violation">
    <a href="https://w3c.github.io/webappsec-csp/#violation">https://w3c.github.io/webappsec-csp/#violation</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-violation">4.5.5. Violation object changes</a>
+    <li><a href="#ref-for-violation">4.6.5. Violation object changes</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-identifier">
+   <a href="https://drafts.csswg.org/css-syntax-3/#identifier">https://drafts.csswg.org/css-syntax-3/#identifier</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-identifier">4.1.1. [StringContext]</a>
+    <li><a href="#ref-for-identifier①">4.1.3. Type conversion</a> <a href="#ref-for-identifier②">(2)</a>
+    <li><a href="#ref-for-identifier③">4.1.4. Validate the string in context</a> <a href="#ref-for-identifier④">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-document">
@@ -3675,14 +3711,14 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <ul>
     <li><a href="#ref-for-document">2.1.1. HTML injection sinks</a>
     <li><a href="#ref-for-document①">3.5. Prepare the script URL and text</a> <a href="#ref-for-document②">(2)</a>
-    <li><a href="#ref-for-document③">4.1.2. Extensions to the Document interface</a> <a href="#ref-for-document④">(2)</a>
-    <li><a href="#ref-for-document⑤">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-document③">4.2.2. Extensions to the Document interface</a> <a href="#ref-for-document④">(2)</a>
+    <li><a href="#ref-for-document⑤">4.5. Integration with DOM Parsing</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-documentfragment">
    <a href="https://dom.spec.whatwg.org/#documentfragment">https://dom.spec.whatwg.org/#documentfragment</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-documentfragment">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-documentfragment">4.5. Integration with DOM Parsing</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-element">
@@ -3690,41 +3726,41 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <ul>
     <li><a href="#ref-for-element">2.1.2. DOM XSS injection sinks</a> <a href="#ref-for-element①">(2)</a>
     <li><a href="#ref-for-element②">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-element③">(2)</a>
-    <li><a href="#ref-for-element④">4.3. Integration with DOM</a>
-    <li><a href="#ref-for-element⑤">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-element④">4.4. Integration with DOM</a>
+    <li><a href="#ref-for-element⑤">4.5. Integration with DOM Parsing</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-range">
    <a href="https://dom.spec.whatwg.org/#range">https://dom.spec.whatwg.org/#range</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-range">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-range">4.5. Integration with DOM Parsing</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-node-append">
    <a href="https://dom.spec.whatwg.org/#concept-node-append">https://dom.spec.whatwg.org/#concept-node-append</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-node-append">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-concept-node-append">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-element-attributes-change-ext">
    <a href="https://dom.spec.whatwg.org/#concept-element-attributes-change-ext">https://dom.spec.whatwg.org/#concept-element-attributes-change-ext</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-element-attributes-change-ext">4.1.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-concept-element-attributes-change-ext">4.2.6. Enforcement in event handler content attributes</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-element-attribute">
    <a href="https://dom.spec.whatwg.org/#concept-element-attribute">https://dom.spec.whatwg.org/#concept-element-attribute</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-element-attribute">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-concept-element-attribute">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-child-text-content">
    <a href="https://dom.spec.whatwg.org/#concept-child-text-content">https://dom.spec.whatwg.org/#concept-child-text-content</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-concept-child-text-content">3.5. Prepare the script URL and text</a> <a href="#ref-for-concept-child-text-content①">(2)</a>
-    <li><a href="#ref-for-concept-child-text-content②">4.1.3.1. Slots with trusted values</a>
-    <li><a href="#ref-for-concept-child-text-content③">4.1.3.2. Setting slot values</a>
-    <li><a href="#script-processing-model:child-text-content">4.1.3.3. Slot value verification</a>
+    <li><a href="#ref-for-concept-child-text-content②">4.2.3.1. Slots with trusted values</a>
+    <li><a href="#ref-for-concept-child-text-content③">4.2.3.2. Setting slot values</a>
+    <li><a href="#script-processing-model:child-text-content">4.2.3.3. Slot value verification</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-context-object">
@@ -3732,14 +3768,13 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <ul>
     <li><a href="#ref-for-context-object">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-context-object①">(2)</a>
     <li><a href="#ref-for-context-object②">2.3.2. TrustedTypePolicy</a> <a href="#ref-for-context-object③">(2)</a> <a href="#ref-for-context-object④">(3)</a>
-    <li><a href="#ref-for-context-object⑤">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-context-object⑥">(2)</a> <a href="#ref-for-context-object⑦">(3)</a> <a href="#ref-for-context-object⑧">(4)</a>
-    <li><a href="#ref-for-context-object⑨">4.1.5. Enforcement in timer functions</a>
+    <li><a href="#ref-for-context-object⑤">4.2.5. Enforcement in timer functions</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-attribute-element">
    <a href="https://dom.spec.whatwg.org/#concept-attribute-element">https://dom.spec.whatwg.org/#concept-attribute-element</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-attribute-element">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-concept-attribute-element">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-element-interface">
@@ -3751,51 +3786,51 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-concept-element-local-name">
    <a href="https://dom.spec.whatwg.org/#concept-element-local-name">https://dom.spec.whatwg.org/#concept-element-local-name</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-element-local-name">4.1.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-concept-element-local-name">4.2.6. Enforcement in event handler content attributes</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-attribute-namespace">
    <a href="https://dom.spec.whatwg.org/#concept-attribute-namespace">https://dom.spec.whatwg.org/#concept-attribute-namespace</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-attribute-namespace">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-concept-attribute-namespace">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-other-applicable-specifications">
    <a href="https://dom.spec.whatwg.org/#other-applicable-specifications">https://dom.spec.whatwg.org/#other-applicable-specifications</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-other-applicable-specifications">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-other-applicable-specifications">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dom-node-textcontent">
    <a href="https://dom.spec.whatwg.org/#dom-node-textcontent">https://dom.spec.whatwg.org/#dom-node-textcontent</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-node-textcontent">4.1.3.2. Setting slot values</a> <a href="#ref-for-dom-node-textcontent①">(2)</a>
+    <li><a href="#ref-for-dom-node-textcontent">4.2.3.2. Setting slot values</a> <a href="#ref-for-dom-node-textcontent①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-attribute-value">
    <a href="https://dom.spec.whatwg.org/#concept-attribute-value">https://dom.spec.whatwg.org/#concept-attribute-value</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-attribute-value">4.3. Integration with DOM</a> <a href="#ref-for-concept-attribute-value①">(2)</a>
+    <li><a href="#ref-for-concept-attribute-value">4.4. Integration with DOM</a> <a href="#ref-for-concept-attribute-value①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-h-the-domparser-interface">
    <a href="https://www.w3.org/TR/DOM-Parsing/#h-the-domparser-interface">https://www.w3.org/TR/DOM-Parsing/#h-the-domparser-interface</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-h-the-domparser-interface">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-h-the-domparser-interface">4.5. Integration with DOM Parsing</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dom-requestdestination-script">
    <a href="https://fetch.spec.whatwg.org/#dom-requestdestination-script">https://fetch.spec.whatwg.org/#dom-requestdestination-script</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-requestdestination-script">3.5. Prepare the script URL and text</a>
-    <li><a href="#ref-for-dom-requestdestination-script①">4.1.3.1. Slots with trusted values</a>
-    <li><a href="#ref-for-dom-requestdestination-script②">4.1.3.3. Slot value verification</a>
+    <li><a href="#ref-for-dom-requestdestination-script①">4.2.3.1. Slots with trusted values</a>
+    <li><a href="#ref-for-dom-requestdestination-script②">4.2.3.3. Slot value verification</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-request-client">
    <a href="https://fetch.spec.whatwg.org/#concept-request-client">https://fetch.spec.whatwg.org/#concept-request-client</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-request-client">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-concept-request-client">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-local-scheme">
@@ -3807,100 +3842,100 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-concept-request">
    <a href="https://fetch.spec.whatwg.org/#concept-request">https://fetch.spec.whatwg.org/#concept-request</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-request">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-concept-request">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-request-url">
    <a href="https://fetch.spec.whatwg.org/#concept-request-url">https://fetch.spec.whatwg.org/#concept-request-url</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-request-url">4.5.1.1. require-trusted-types-for Pre-Navigation check</a> <a href="#ref-for-concept-request-url①">(2)</a> <a href="#ref-for-concept-request-url②">(3)</a>
+    <li><a href="#ref-for-concept-request-url">4.6.1.1. require-trusted-types-for Pre-Navigation check</a> <a href="#ref-for-concept-request-url①">(2)</a> <a href="#ref-for-concept-request-url②">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-cereactions">
    <a href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions">https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-cereactions">4.1.2. Extensions to the Document interface</a> <a href="#ref-for-cereactions①">(2)</a>
-    <li><a href="#ref-for-cereactions②">4.1.3.2. Setting slot values</a> <a href="#ref-for-cereactions③">(2)</a> <a href="#ref-for-cereactions④">(3)</a> <a href="#ref-for-cereactions⑤">(4)</a>
-    <li><a href="#ref-for-cereactions⑥">4.1.4. Enforcement in element attributes</a> <a href="#ref-for-cereactions⑦">(2)</a> <a href="#ref-for-cereactions⑧">(3)</a> <a href="#ref-for-cereactions⑨">(4)</a>
-    <li><a href="#ref-for-cereactions①⓪">4.4. Integration with DOM Parsing</a> <a href="#ref-for-cereactions①①">(2)</a> <a href="#ref-for-cereactions①②">(3)</a> <a href="#ref-for-cereactions①③">(4)</a>
+    <li><a href="#ref-for-cereactions">4.2.2. Extensions to the Document interface</a> <a href="#ref-for-cereactions①">(2)</a>
+    <li><a href="#ref-for-cereactions②">4.2.3.2. Setting slot values</a> <a href="#ref-for-cereactions③">(2)</a> <a href="#ref-for-cereactions④">(3)</a> <a href="#ref-for-cereactions⑤">(4)</a>
+    <li><a href="#ref-for-cereactions⑥">4.2.4. Enforcement in element attributes</a> <a href="#ref-for-cereactions⑦">(2)</a> <a href="#ref-for-cereactions⑧">(3)</a> <a href="#ref-for-cereactions⑨">(4)</a>
+    <li><a href="#ref-for-cereactions①⓪">4.5. Integration with DOM Parsing</a> <a href="#ref-for-cereactions①①">(2)</a> <a href="#ref-for-cereactions①②">(3)</a> <a href="#ref-for-cereactions①③">(4)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-htmlelement">
    <a href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement">https://html.spec.whatwg.org/multipage/dom.html#htmlelement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-htmlelement">4.1.3.2. Setting slot values</a>
-    <li><a href="#ref-for-htmlelement①">4.1.4. Enforcement in element attributes</a> <a href="#ref-for-htmlelement②">(2)</a> <a href="#ref-for-htmlelement③">(3)</a>
+    <li><a href="#ref-for-htmlelement">4.2.3.2. Setting slot values</a>
+    <li><a href="#ref-for-htmlelement①">4.2.4. Enforcement in element attributes</a> <a href="#ref-for-htmlelement②">(2)</a> <a href="#ref-for-htmlelement③">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-htmlembedelement">
    <a href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlembedelement">https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlembedelement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-htmlembedelement">4.1.4. Enforcement in element attributes</a>
+    <li><a href="#ref-for-htmlembedelement">4.2.4. Enforcement in element attributes</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-htmliframeelement">
    <a href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmliframeelement">https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmliframeelement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-htmliframeelement">4.1.4. Enforcement in element attributes</a>
+    <li><a href="#ref-for-htmliframeelement">4.2.4. Enforcement in element attributes</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-htmlobjectelement">
    <a href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlobjectelement">https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlobjectelement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-htmlobjectelement">4.1.4. Enforcement in element attributes</a>
+    <li><a href="#ref-for-htmlobjectelement">4.2.4. Enforcement in element attributes</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-htmlscriptelement">
    <a href="https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement">https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-htmlscriptelement">4.1.3.2. Setting slot values</a> <a href="#ref-for-htmlscriptelement①">(2)</a> <a href="#ref-for-htmlscriptelement②">(3)</a>
+    <li><a href="#ref-for-htmlscriptelement">4.2.3.2. Setting slot values</a> <a href="#ref-for-htmlscriptelement①">(2)</a> <a href="#ref-for-htmlscriptelement②">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-window">
    <a href="https://html.spec.whatwg.org/multipage/window-object.html#window">https://html.spec.whatwg.org/multipage/window-object.html#window</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-window">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-window①">4.1. Integration with HTML</a>
-    <li><a href="#ref-for-window②">4.1.1. Extensions to the Window interface</a> <a href="#ref-for-window③">(2)</a> <a href="#ref-for-window④">(3)</a>
+    <li><a href="#ref-for-window①">4.2. Integration with HTML</a>
+    <li><a href="#ref-for-window②">4.2.1. Extensions to the Window interface</a> <a href="#ref-for-window③">(2)</a> <a href="#ref-for-window④">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-windoworworkerglobalscope">
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope">https://html.spec.whatwg.org/multipage/webappapis.html#windoworworkerglobalscope</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-windoworworkerglobalscope">4.1.5. Enforcement in timer functions</a> <a href="#ref-for-windoworworkerglobalscope①">(2)</a>
+    <li><a href="#ref-for-windoworworkerglobalscope">4.2.5. Enforcement in timer functions</a> <a href="#ref-for-windoworworkerglobalscope①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-document-csp-list">
    <a href="https://html.spec.whatwg.org/multipage/dom.html#concept-document-csp-list">https://html.spec.whatwg.org/multipage/dom.html#concept-document-csp-list</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-concept-document-csp-list">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-concept-document-csp-list①">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-concept-document-csp-list②">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-concept-document-csp-list①">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-concept-document-csp-list②">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-settings-object-global">
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-global">https://html.spec.whatwg.org/multipage/webappapis.html#concept-settings-object-global</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-settings-object-global">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-concept-settings-object-global">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dom-innertext">
    <a href="https://html.spec.whatwg.org/multipage/dom.html#dom-innertext">https://html.spec.whatwg.org/multipage/dom.html#dom-innertext</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dom-innertext">4.1.3.2. Setting slot values</a> <a href="#ref-for-dom-innertext①">(2)</a>
+    <li><a href="#ref-for-dom-innertext">4.2.3.2. Setting slot values</a> <a href="#ref-for-dom-innertext①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-prepare-a-script">
    <a href="https://html.spec.whatwg.org/multipage/scripting.html#prepare-a-script">https://html.spec.whatwg.org/multipage/scripting.html#prepare-a-script</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-prepare-a-script">4.1.3.3. Slot value verification</a>
+    <li><a href="#ref-for-prepare-a-script">4.2.3.3. Slot value verification</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-global-object-realm">
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-global-object-realm">https://html.spec.whatwg.org/multipage/webappapis.html#concept-global-object-realm</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-concept-global-object-realm">2.3. Policies</a>
-    <li><a href="#ref-for-concept-global-object-realm①">4.5.1. require-trusted-types-for directive</a>
+    <li><a href="#ref-for-concept-global-object-realm①">4.6.1. require-trusted-types-for directive</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-reflect">
@@ -3913,23 +3948,23 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <a href="https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global">https://html.spec.whatwg.org/multipage/webappapis.html#concept-relevant-global</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-concept-relevant-global">2.3.1. TrustedTypePolicyFactory</a>
-    <li><a href="#ref-for-concept-relevant-global①">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-concept-relevant-global②">(2)</a> <a href="#ref-for-concept-relevant-global③">(3)</a> <a href="#ref-for-concept-relevant-global④">(4)</a>
-    <li><a href="#ref-for-concept-relevant-global⑤">3.5. Prepare the script URL and text</a> <a href="#ref-for-concept-relevant-global⑥">(2)</a>
-    <li><a href="#ref-for-concept-relevant-global⑦">4.1.5. Enforcement in timer functions</a>
-    <li><a href="#ref-for-concept-relevant-global⑧">4.1.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-concept-relevant-global①">3.5. Prepare the script URL and text</a> <a href="#ref-for-concept-relevant-global②">(2)</a>
+    <li><a href="#ref-for-concept-relevant-global③">4.2.5. Enforcement in timer functions</a>
+    <li><a href="#ref-for-concept-relevant-global④">4.2.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-concept-relevant-global⑤">4.2.7. Validate the string in context</a> <a href="#ref-for-concept-relevant-global⑥">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-list-append">
    <a href="https://infra.spec.whatwg.org/#list-append">https://infra.spec.whatwg.org/#list-append</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list-append">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-list-append">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-ascii-case-insensitive">
    <a href="https://infra.spec.whatwg.org/#ascii-case-insensitive">https://infra.spec.whatwg.org/#ascii-case-insensitive</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#script-processing-model:ascii-case-insensitive">4.1.3.3. Slot value verification</a> <a href="#script-processing-model:ascii-case-insensitive-2">(2)</a> <a href="#script-processing-model:ascii-case-insensitive-3">(3)</a>
-    <li><a href="#ref-for-ascii-case-insensitive">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#script-processing-model:ascii-case-insensitive">4.2.3.3. Slot value verification</a> <a href="#script-processing-model:ascii-case-insensitive-2">(2)</a> <a href="#script-processing-model:ascii-case-insensitive-3">(3)</a>
+    <li><a href="#ref-for-ascii-case-insensitive">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-ascii-lowercase">
@@ -3941,15 +3976,15 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-string-concatenate">
    <a href="https://infra.spec.whatwg.org/#string-concatenate">https://infra.spec.whatwg.org/#string-concatenate</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-string-concatenate">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-string-concatenate①">(2)</a>
-    <li><a href="#ref-for-string-concatenate②">4.1.6. Enforcement in event handler content attributes</a>
-    <li><a href="#ref-for-string-concatenate③">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-string-concatenate">4.2.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-string-concatenate①">4.2.7. Validate the string in context</a>
+    <li><a href="#ref-for-string-concatenate②">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-list-contain">
    <a href="https://infra.spec.whatwg.org/#list-contain">https://infra.spec.whatwg.org/#list-contain</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-list-contain">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-list-contain">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-html-namespace">
@@ -3967,31 +4002,43 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-InterfaceSVGElement">
    <a href="https://svgwg.org/svg2-draft/types.html#InterfaceSVGElement">https://svgwg.org/svg2-draft/types.html#InterfaceSVGElement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-InterfaceSVGElement">4.2. Integration with SVG</a>
+    <li><a href="#ref-for-InterfaceSVGElement">4.3. Integration with SVG</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-InterfaceSVGScriptElement">
    <a href="https://svgwg.org/svg2-draft/interact.html#InterfaceSVGScriptElement">https://svgwg.org/svg2-draft/interact.html#InterfaceSVGScriptElement</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-InterfaceSVGScriptElement">4.2. Integration with SVG</a> <a href="#ref-for-InterfaceSVGScriptElement①">(2)</a>
+    <li><a href="#ref-for-InterfaceSVGScriptElement">4.3. Integration with SVG</a> <a href="#ref-for-InterfaceSVGScriptElement①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-url-scheme">
    <a href="https://url.spec.whatwg.org/#concept-url-scheme">https://url.spec.whatwg.org/#concept-url-scheme</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-url-scheme">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-concept-url-scheme">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-url-parser">
    <a href="https://url.spec.whatwg.org/#concept-url-parser">https://url.spec.whatwg.org/#concept-url-parser</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-url-parser">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-concept-url-parser">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-concept-url-serializer">
    <a href="https://url.spec.whatwg.org/#concept-url-serializer">https://url.spec.whatwg.org/#concept-url-serializer</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-url-serializer">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-concept-url-serializer">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-AllowShared">
+   <a href="https://heycam.github.io/webidl/#AllowShared">https://heycam.github.io/webidl/#AllowShared</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-AllowShared">4.1.2. Extended attributes applicable to types</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-Clamp">
+   <a href="https://heycam.github.io/webidl/#Clamp">https://heycam.github.io/webidl/#Clamp</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-Clamp">4.1.2. Extended attributes applicable to types</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-DOMString">
@@ -4000,15 +4047,22 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-idl-DOMString">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-idl-DOMString①">(2)</a> <a href="#ref-for-idl-DOMString②">(3)</a> <a href="#ref-for-idl-DOMString③">(4)</a> <a href="#ref-for-idl-DOMString④">(5)</a> <a href="#ref-for-idl-DOMString⑤">(6)</a> <a href="#ref-for-idl-DOMString⑥">(7)</a> <a href="#ref-for-idl-DOMString⑦">(8)</a> <a href="#ref-for-idl-DOMString⑧">(9)</a> <a href="#ref-for-idl-DOMString⑨">(10)</a>
     <li><a href="#ref-for-idl-DOMString①⓪">2.3.2. TrustedTypePolicy</a> <a href="#ref-for-idl-DOMString①①">(2)</a> <a href="#ref-for-idl-DOMString①②">(3)</a> <a href="#ref-for-idl-DOMString①③">(4)</a>
     <li><a href="#ref-for-idl-DOMString①④">2.3.3. TrustedTypePolicyOptions</a> <a href="#ref-for-idl-DOMString①⑤">(2)</a> <a href="#ref-for-idl-DOMString①⑥">(3)</a> <a href="#ref-for-idl-DOMString①⑦">(4)</a> <a href="#ref-for-idl-DOMString①⑧">(5)</a>
-    <li><a href="#ref-for-idl-DOMString①⑨">4. Integrations</a> <a href="#ref-for-idl-DOMString②⓪">(2)</a> <a href="#ref-for-idl-DOMString②①">(3)</a>
-    <li><a href="#ref-for-idl-DOMString②②">4.1.4. Enforcement in element attributes</a>
-    <li><a href="#ref-for-idl-DOMString②③">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-idl-DOMString①⑨">4. Integrations</a> <a href="#ref-for-idl-DOMString②⓪">(2)</a>
+    <li><a href="#ref-for-idl-DOMString②①">4.1.1. [StringContext]</a> <a href="#ref-for-idl-DOMString②②">(2)</a>
+    <li><a href="#ref-for-idl-DOMString②③">4.1.3. Type conversion</a> <a href="#ref-for-idl-DOMString②④">(2)</a> <a href="#ref-for-idl-DOMString②⑤">(3)</a>
+    <li><a href="#ref-for-idl-DOMString②⑥">4.5. Integration with DOM Parsing</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-EnforceRange">
+   <a href="https://heycam.github.io/webidl/#EnforceRange">https://heycam.github.io/webidl/#EnforceRange</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-EnforceRange">4.1.2. Extended attributes applicable to types</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-exceptiondef-evalerror">
    <a href="https://heycam.github.io/webidl/#exceptiondef-evalerror">https://heycam.github.io/webidl/#exceptiondef-evalerror</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-exceptiondef-evalerror">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-exceptiondef-evalerror">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-Exposed">
@@ -4019,19 +4073,19 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-Exposed②">2.2.3. TrustedScriptURL</a>
     <li><a href="#ref-for-Exposed③">2.3.1. TrustedTypePolicyFactory</a>
     <li><a href="#ref-for-Exposed④">2.3.2. TrustedTypePolicy</a>
-    <li><a href="#ref-for-Exposed⑤">4.4. Integration with DOM Parsing</a>
+    <li><a href="#ref-for-Exposed⑤">4.5. Integration with DOM Parsing</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-Function">
    <a href="https://heycam.github.io/webidl/#Function">https://heycam.github.io/webidl/#Function</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-Function">4.1.5. Enforcement in timer functions</a> <a href="#ref-for-Function①">(2)</a> <a href="#ref-for-Function②">(3)</a>
+    <li><a href="#ref-for-Function">4.2.5. Enforcement in timer functions</a> <a href="#ref-for-Function①">(2)</a> <a href="#ref-for-Function②">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-NewObject">
    <a href="https://heycam.github.io/webidl/#NewObject">https://heycam.github.io/webidl/#NewObject</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-NewObject">4.4. Integration with DOM Parsing</a> <a href="#ref-for-NewObject①">(2)</a>
+    <li><a href="#ref-for-NewObject">4.5. Integration with DOM Parsing</a> <a href="#ref-for-NewObject①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-SecureContext">
@@ -4042,14 +4096,16 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-SecureContext②">2.2.3. TrustedScriptURL</a>
     <li><a href="#ref-for-SecureContext③">2.3.1. TrustedTypePolicyFactory</a>
     <li><a href="#ref-for-SecureContext④">2.3.2. TrustedTypePolicy</a>
-    <li><a href="#ref-for-SecureContext⑤">4.1.1. Extensions to the Window interface</a>
+    <li><a href="#ref-for-SecureContext⑤">4.2.1. Extensions to the Window interface</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-TreatNullAs">
    <a href="https://heycam.github.io/webidl/#TreatNullAs">https://heycam.github.io/webidl/#TreatNullAs</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-TreatNullAs">4. Integrations</a>
-    <li><a href="#ref-for-TreatNullAs①">4.1.3.2. Setting slot values</a>
+    <li><a href="#ref-for-TreatNullAs">4.1.2. Extended attributes applicable to types</a>
+    <li><a href="#ref-for-TreatNullAs①">4.1.3. Type conversion</a>
+    <li><a href="#ref-for-TreatNullAs②">4.2.3.2. Setting slot values</a>
+    <li><a href="#ref-for-TreatNullAs③">4.5. Integration with DOM Parsing</a> <a href="#ref-for-TreatNullAs④">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-exceptiondef-typeerror">
@@ -4065,14 +4121,14 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
    <ul>
     <li><a href="#ref-for-idl-USVString">2.3.3. TrustedTypePolicyOptions</a>
     <li><a href="#ref-for-idl-USVString①">4. Integrations</a>
+    <li><a href="#ref-for-idl-USVString②">4.1.1. [StringContext]</a> <a href="#ref-for-idl-USVString③">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-attribute">
    <a href="https://heycam.github.io/webidl/#dfn-attribute">https://heycam.github.io/webidl/#dfn-attribute</a><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dfn-attribute">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-dfn-attribute①">(2)</a> <a href="#ref-for-dfn-attribute②">(3)</a>
-    <li><a href="#ref-for-dfn-attribute③">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-dfn-attribute④">(2)</a>
-    <li><a href="#ref-for-dfn-attribute⑤">4.3. Integration with DOM</a>
+    <li><a href="#ref-for-dfn-attribute③">4.4. Integration with DOM</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-idl-boolean">
@@ -4081,16 +4137,28 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
     <li><a href="#ref-for-idl-boolean">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-idl-boolean①">(2)</a> <a href="#ref-for-idl-boolean②">(3)</a>
    </ul>
   </aside>
+  <aside class="dfn-panel" data-for="term-for-dfn-convert-ecmascript-to-idl-value">
+   <a href="https://heycam.github.io/webidl/#dfn-convert-ecmascript-to-idl-value">https://heycam.github.io/webidl/#dfn-convert-ecmascript-to-idl-value</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dfn-convert-ecmascript-to-idl-value">4.1.3. Type conversion</a>
+   </ul>
+  </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-extended-attribute">
    <a href="https://heycam.github.io/webidl/#dfn-extended-attribute">https://heycam.github.io/webidl/#dfn-extended-attribute</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-extended-attribute">2.4.2. TrustedTypes extended attribute</a>
+    <li><a href="#ref-for-dfn-extended-attribute">4.1.1. [StringContext]</a> <a href="#ref-for-dfn-extended-attribute①">(2)</a> <a href="#ref-for-dfn-extended-attribute②">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-identifier">
    <a href="https://heycam.github.io/webidl/#dfn-identifier">https://heycam.github.io/webidl/#dfn-identifier</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-identifier">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-dfn-identifier①">(2)</a>
+    <li><a href="#ref-for-dfn-identifier">4.2.7. Validate the string in context</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-dfn-idl-fragment">
+   <a href="https://heycam.github.io/webidl/#dfn-idl-fragment">https://heycam.github.io/webidl/#dfn-idl-fragment</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dfn-idl-fragment">4.1.1. [StringContext]</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-include">
@@ -4108,31 +4176,55 @@ <h3 class="no-num no-ref heading settled" id="index-defined-here"><span class="c
   <aside class="dfn-panel" data-for="term-for-idl-long">
    <a href="https://heycam.github.io/webidl/#idl-long">https://heycam.github.io/webidl/#idl-long</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-idl-long">4.1.5. Enforcement in timer functions</a> <a href="#ref-for-idl-long①">(2)</a> <a href="#ref-for-idl-long②">(3)</a> <a href="#ref-for-idl-long③">(4)</a>
+    <li><a href="#ref-for-idl-long">4.2.5. Enforcement in timer functions</a> <a href="#ref-for-idl-long①">(2)</a> <a href="#ref-for-idl-long②">(3)</a> <a href="#ref-for-idl-long③">(4)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-operation">
    <a href="https://heycam.github.io/webidl/#dfn-operation">https://heycam.github.io/webidl/#dfn-operation</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-operation">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-dfn-operation①">(2)</a> <a href="#ref-for-dfn-operation②">(3)</a>
+    <li><a href="#ref-for-dfn-operation">4.1.1. [StringContext]</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-dfn-platform-object">
+   <a href="https://heycam.github.io/webidl/#dfn-platform-object">https://heycam.github.io/webidl/#dfn-platform-object</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dfn-platform-object">4.1.4. Validate the string in context</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-read-only">
    <a href="https://heycam.github.io/webidl/#dfn-read-only">https://heycam.github.io/webidl/#dfn-read-only</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-read-only">2.4.2. TrustedTypes extended attribute</a>
+    <li><a href="#ref-for-dfn-read-only">4.1.1. [StringContext]</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-dfn-regular-attribute">
+   <a href="https://heycam.github.io/webidl/#dfn-regular-attribute">https://heycam.github.io/webidl/#dfn-regular-attribute</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dfn-regular-attribute">4.1.1. [StringContext]</a> <a href="#ref-for-dfn-regular-attribute①">(2)</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-dfn-regular-operation">
+   <a href="https://heycam.github.io/webidl/#dfn-regular-operation">https://heycam.github.io/webidl/#dfn-regular-operation</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dfn-regular-operation">4.1.1. [StringContext]</a> <a href="#ref-for-dfn-regular-operation①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-dfn-xattr-identifier">
    <a href="https://heycam.github.io/webidl/#dfn-xattr-identifier">https://heycam.github.io/webidl/#dfn-xattr-identifier</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-dfn-xattr-identifier">2.4.2. TrustedTypes extended attribute</a>
+    <li><a href="#ref-for-dfn-xattr-identifier">4.1.1. [StringContext]</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="term-for-this">
    <a href="https://heycam.github.io/webidl/#this">https://heycam.github.io/webidl/#this</a><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-this">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-this①">(2)</a>
+    <li><a href="#ref-for-this">4.1.3. Type conversion</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="term-for-dfn-variadic">
+   <a href="https://heycam.github.io/webidl/#dfn-variadic">https://heycam.github.io/webidl/#dfn-variadic</a><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-dfn-variadic">4.1.1. [StringContext]</a>
    </ul>
   </aside>
   <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span class="content">Terms defined by reference</span><a class="self-link" href="#index-defined-elsewhere"></a></h3>
@@ -4158,6 +4250,11 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="term-for-directive-value" style="color:initial">value</span>
      <li><span class="dfn-paneled" id="term-for-violation" style="color:initial">violation</span>
     </ul>
+   <li>
+    <a data-link-type="biblio">[css-syntax-3]</a> defines the following terms:
+    <ul>
+     <li><span class="dfn-paneled" id="term-for-identifier" style="color:initial">identifier</span>
+    </ul>
    <li>
     <a data-link-type="biblio">[DOM]</a> defines the following terms:
     <ul>
@@ -4238,7 +4335,10 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
    <li>
     <a data-link-type="biblio">[WebIDL]</a> defines the following terms:
     <ul>
+     <li><span class="dfn-paneled" id="term-for-AllowShared" style="color:initial">AllowShared</span>
+     <li><span class="dfn-paneled" id="term-for-Clamp" style="color:initial">Clamp</span>
      <li><span class="dfn-paneled" id="term-for-idl-DOMString" style="color:initial">DOMString</span>
+     <li><span class="dfn-paneled" id="term-for-EnforceRange" style="color:initial">EnforceRange</span>
      <li><span class="dfn-paneled" id="term-for-exceptiondef-evalerror" style="color:initial">EvalError</span>
      <li><span class="dfn-paneled" id="term-for-Exposed" style="color:initial">Exposed</span>
      <li><span class="dfn-paneled" id="term-for-Function" style="color:initial">Function</span>
@@ -4249,15 +4349,21 @@ <h3 class="no-num no-ref heading settled" id="index-defined-elsewhere"><span cla
      <li><span class="dfn-paneled" id="term-for-idl-USVString" style="color:initial">USVString</span>
      <li><span class="dfn-paneled" id="term-for-dfn-attribute" style="color:initial">attribute</span>
      <li><span class="dfn-paneled" id="term-for-idl-boolean" style="color:initial">boolean</span>
+     <li><span class="dfn-paneled" id="term-for-dfn-convert-ecmascript-to-idl-value" style="color:initial">converted to an idl value</span>
      <li><span class="dfn-paneled" id="term-for-dfn-extended-attribute" style="color:initial">extended attribute</span>
      <li><span class="dfn-paneled" id="term-for-dfn-identifier" style="color:initial">identifier</span>
+     <li><span class="dfn-paneled" id="term-for-dfn-idl-fragment" style="color:initial">idl fragment</span>
      <li><span class="dfn-paneled" id="term-for-include" style="color:initial">include</span>
      <li><span class="dfn-paneled" id="term-for-interface-mixin" style="color:initial">interface mixin</span>
      <li><span class="dfn-paneled" id="term-for-idl-long" style="color:initial">long</span>
      <li><span class="dfn-paneled" id="term-for-dfn-operation" style="color:initial">operation</span>
+     <li><span class="dfn-paneled" id="term-for-dfn-platform-object" style="color:initial">platform object</span>
      <li><span class="dfn-paneled" id="term-for-dfn-read-only" style="color:initial">read only</span>
+     <li><span class="dfn-paneled" id="term-for-dfn-regular-attribute" style="color:initial">regular attribute</span>
+     <li><span class="dfn-paneled" id="term-for-dfn-regular-operation" style="color:initial">regular operation</span>
      <li><span class="dfn-paneled" id="term-for-dfn-xattr-identifier" style="color:initial">takes an identifier</span>
      <li><span class="dfn-paneled" id="term-for-this" style="color:initial">this</span>
+     <li><span class="dfn-paneled" id="term-for-dfn-variadic" style="color:initial">variadic</span>
     </ul>
   </ul>
   <h2 class="no-num no-ref heading settled" id="references"><span class="content">References</span><a class="self-link" href="#references"></a></h2>
@@ -4265,6 +4371,8 @@ <h3 class="no-num no-ref heading settled" id="normative"><span class="content">N
   <dl>
    <dt id="biblio-csp3">[CSP3]
    <dd>Mike West. <a href="https://www.w3.org/TR/CSP3/">Content Security Policy Level 3</a>. 15 October 2018. WD. URL: <a href="https://www.w3.org/TR/CSP3/">https://www.w3.org/TR/CSP3/</a>
+   <dt id="biblio-css-syntax-3">[CSS-SYNTAX-3]
+   <dd>Tab Atkins Jr.; Simon Sapin. <a href="https://www.w3.org/TR/css-syntax-3/">CSS Syntax Module Level 3</a>. 16 July 2019. CR. URL: <a href="https://www.w3.org/TR/css-syntax-3/">https://www.w3.org/TR/css-syntax-3/</a>
    <dt id="biblio-dom">[DOM]
    <dd>Anne van Kesteren. <a href="https://dom.spec.whatwg.org/">DOM Standard</a>. Living Standard. URL: <a href="https://dom.spec.whatwg.org/">https://dom.spec.whatwg.org/</a>
    <dt id="biblio-dom-parsing">[DOM-Parsing]
@@ -4309,14 +4417,14 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 
 [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#Exposed" id="ref-for-Exposed③①"><c- g>Exposed</c-></a>=<c- n>Window</c->, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#SecureContext" id="ref-for-SecureContext③①"><c- g>SecureContext</c-></a>] <c- b>interface</c-> <a href="#trustedtypepolicyfactory"><code><c- g>TrustedTypePolicyFactory</c-></code></a> {
     <a class="n" data-link-type="idl-name" href="#trustedtypepolicy" id="ref-for-trustedtypepolicy④①"><c- n>TrustedTypePolicy</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicyfactory-createpolicy" id="ref-for-dom-trustedtypepolicyfactory-createpolicy②①"><c- g>createPolicy</c-></a>(
-        <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⑤"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyname"><code><c- g>policyName</c-></code></a>, <c- b>optional</c-> <a class="n" data-link-type="idl-name" href="#dictdef-trustedtypepolicyoptions" id="ref-for-dictdef-trustedtypepolicyoptions⑤"><c- n>TrustedTypePolicyOptions</c-></a> <a href="#dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyoptions"><code><c- g>policyOptions</c-></code></a>);
+        <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⑧"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyname"><code><c- g>policyName</c-></code></a>, <c- b>optional</c-> <a class="n" data-link-type="idl-name" href="#dictdef-trustedtypepolicyoptions" id="ref-for-dictdef-trustedtypepolicyoptions⑤"><c- n>TrustedTypePolicyOptions</c-></a> <a href="#dom-trustedtypepolicyfactory-createpolicy-policyname-policyoptions-policyoptions"><code><c- g>policyOptions</c-></code></a>);
     <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-boolean" id="ref-for-idl-boolean③"><c- b>boolean</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicyfactory-ishtml" id="ref-for-dom-trustedtypepolicyfactory-ishtml①"><c- g>isHTML</c-></a>(<c- b>any</c-> <a href="#dom-trustedtypepolicyfactory-ishtml-value-value"><code><c- g>value</c-></code></a>);
     <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-boolean" id="ref-for-idl-boolean①①"><c- b>boolean</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicyfactory-isscript" id="ref-for-dom-trustedtypepolicyfactory-isscript①"><c- g>isScript</c-></a>(<c- b>any</c-> <a href="#dom-trustedtypepolicyfactory-isscript-value-value"><code><c- g>value</c-></code></a>);
     <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-boolean" id="ref-for-idl-boolean②①"><c- b>boolean</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicyfactory-isscripturl" id="ref-for-dom-trustedtypepolicyfactory-isscripturl①"><c- g>isScriptURL</c-></a>(<c- b>any</c-> <a href="#dom-trustedtypepolicyfactory-isscripturl-value-value"><code><c- g>value</c-></code></a>);
-    <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑧"><c- n>TrustedHTML</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="TrustedHTML" href="#dom-trustedtypepolicyfactory-emptyhtml" id="ref-for-dom-trustedtypepolicyfactory-emptyhtml①"><c- g>emptyHTML</c-></a>;
-    <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript①⑦"><c- n>TrustedScript</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="TrustedScript" href="#dom-trustedtypepolicyfactory-emptyscript" id="ref-for-dom-trustedtypepolicyfactory-emptyscript①"><c- g>emptyScript</c-></a>;
+    <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①①"><c- n>TrustedHTML</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="TrustedHTML" href="#dom-trustedtypepolicyfactory-emptyhtml" id="ref-for-dom-trustedtypepolicyfactory-emptyhtml①"><c- g>emptyHTML</c-></a>;
+    <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript①④"><c- n>TrustedScript</c-></a> <a class="idl-code" data-link-type="attribute" data-readonly data-type="TrustedScript" href="#dom-trustedtypepolicyfactory-emptyscript" id="ref-for-dom-trustedtypepolicyfactory-emptyscript①"><c- g>emptyScript</c-></a>;
     <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①①⓪"><c- b>DOMString</c-></a>? <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicyfactory-getattributetype" id="ref-for-dom-trustedtypepolicyfactory-getattributetype①"><c- g>getAttributeType</c-></a>(
-        <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②④"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-getattributetype-tagname-attribute-elementns-attrns-tagname"><code><c- g>tagName</c-></code></a>,
+        <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⑦"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-getattributetype-tagname-attribute-elementns-attrns-tagname"><code><c- g>tagName</c-></code></a>,
         <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString③①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-getattributetype-tagname-attribute-elementns-attrns-attribute"><code><c- g>attribute</c-></code></a>,
         <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString④①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-getattributetype-tagname-attribute-elementns-attrns-elementns"><code><c- g>elementNs</c-></code></a> = "",
         <c- b>optional</c-> <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString⑤①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicyfactory-getattributetype-tagname-attribute-elementns-attrns-attrns"><code><c- g>attrNs</c-></code></a> = "");
@@ -4332,7 +4440,7 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
   <c- b>readonly</c-> <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⓪①"><c- b>DOMString</c-></a> <a data-readonly data-type="DOMString" href="#dom-trustedtypepolicy-name"><code><c- g>name</c-></code></a>;
   <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑤①"><c- n>TrustedHTML</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicy-createhtml" id="ref-for-dom-trustedtypepolicy-createhtml①①"><c- g>createHTML</c-></a>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①①①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicy-createhtml-input-arguments-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-trustedtypepolicy-createhtml-input-arguments-arguments"><code><c- g>arguments</c-></code></a>);
   <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript④①"><c- n>TrustedScript</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicy-createscript" id="ref-for-dom-trustedtypepolicy-createscript①①"><c- g>createScript</c-></a>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①②①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicy-createscript-input-arguments-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-trustedtypepolicy-createscript-input-arguments-arguments"><code><c- g>arguments</c-></code></a>);
-  <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl①④"><c- n>TrustedScriptURL</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicy-createscripturl" id="ref-for-dom-trustedtypepolicy-createscripturl①①"><c- g>createScriptURL</c-></a>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①③①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicy-createscripturl-input-arguments-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-trustedtypepolicy-createscripturl-input-arguments-arguments"><code><c- g>arguments</c-></code></a>);
+  <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl①①"><c- n>TrustedScriptURL</c-></a> <a class="idl-code" data-link-type="method" href="#dom-trustedtypepolicy-createscripturl" id="ref-for-dom-trustedtypepolicy-createscripturl①①"><c- g>createScriptURL</c-></a>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①③①"><c- b>DOMString</c-></a> <a href="#dom-trustedtypepolicy-createscripturl-input-arguments-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-trustedtypepolicy-createscripturl-input-arguments-arguments"><code><c- g>arguments</c-></code></a>);
 };
 
 <c- b>dictionary</c-> <a href="#dictdef-trustedtypepolicyoptions"><code><c- g>TrustedTypePolicyOptions</c-></code></a> {
@@ -4342,42 +4450,40 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 };
 <c- b>callback</c-> <a href="#callbackdef-createhtmlcallback"><code><c- g>CreateHTMLCallback</c-></code></a> = <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①④①"><c- b>DOMString</c-></a> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑤①"><c- b>DOMString</c-></a> <a href="#dom-createhtmlcallback-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-createhtmlcallback-arguments"><code><c- g>arguments</c-></code></a>);
 <c- b>callback</c-> <a href="#callbackdef-createscriptcallback"><code><c- g>CreateScriptCallback</c-></code></a> = <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑥①"><c- b>DOMString</c-></a> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑦①"><c- b>DOMString</c-></a> <a href="#dom-createscriptcallback-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-createscriptcallback-arguments"><code><c- g>arguments</c-></code></a>);
-<c- b>callback</c-> <a href="#callbackdef-createscripturlcallback"><code><c- g>CreateScriptURLCallback</c-></code></a> = <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString②"><c- b>USVString</c-></a> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑧①"><c- b>DOMString</c-></a> <a href="#dom-createscripturlcallback-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-createscripturlcallback-arguments"><code><c- g>arguments</c-></code></a>);
-
-<c- b>typedef</c-> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑨①"><c- b>DOMString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑦①"><c- n>TrustedHTML</c-></a>) <a href="#typedefdef-htmlstring"><code><c- g>HTMLString</c-></code></a>;
-<c- b>typedef</c-> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⓪①"><c- b>DOMString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑥①"><c- n>TrustedScript</c-></a>) <a href="#typedefdef-scriptstring"><code><c- g>ScriptString</c-></code></a>;
-<c- b>typedef</c-> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString①①"><c- b>USVString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑤①"><c- n>TrustedScriptURL</c-></a>) <a href="#typedefdef-scripturlstring"><code><c- g>ScriptURLString</c-></code></a>;
-<c- b>typedef</c-> (<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑧①"><c- n>TrustedHTML</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑦①"><c- n>TrustedScript</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑥①"><c- n>TrustedScriptURL</c-></a>) <a href="#typedefdef-trustedtype"><code><c- g>TrustedType</c-></code></a>;
+<c- b>callback</c-> <a href="#callbackdef-createscripturlcallback"><code><c- g>CreateScriptURLCallback</c-></code></a> = <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString④"><c- b>USVString</c-></a> (<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑧①"><c- b>DOMString</c-></a> <a href="#dom-createscripturlcallback-input"><code><c- g>input</c-></code></a>, <c- b>any</c->... <a href="#dom-createscripturlcallback-arguments"><code><c- g>arguments</c-></code></a>);
 
-<c- b>typedef</c-> (([<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs②"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②①①"><c- b>DOMString</c-></a>) <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑨①"><c- n>TrustedHTML</c-></a>) <a href="#typedefdef-htmlstringdefaultsempty"><code><c- g>HTMLStringDefaultsEmpty</c-></code></a>;
+<c- b>typedef</c-> [<a class="idl-code" data-link-type="extended-attribute"><c- g>StringContext</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑥①"><c- n>TrustedHTML</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString①⑨①"><c- b>DOMString</c-></a> <a href="#typedefdef-htmlstring"><code><c- g>HTMLString</c-></code></a>;
+<c- b>typedef</c-> [<a class="idl-code" data-link-type="extended-attribute"><c- g>StringContext</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑤①"><c- n>TrustedScript</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⓪①"><c- b>DOMString</c-></a> <a href="#typedefdef-scriptstring"><code><c- g>ScriptString</c-></code></a>;
+<c- b>typedef</c-> [<a class="idl-code" data-link-type="extended-attribute"><c- g>StringContext</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl④①"><c- n>TrustedScriptURL</c-></a>] <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-USVString" id="ref-for-idl-USVString①①"><c- b>USVString</c-></a> <a href="#typedefdef-scripturlstring"><code><c- g>ScriptURLString</c-></code></a>;
+<c- b>typedef</c-> (<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml⑦①"><c- n>TrustedHTML</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑥①"><c- n>TrustedScript</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑤①"><c- n>TrustedScriptURL</c-></a>) <a href="#typedefdef-trustedtype"><code><c- g>TrustedType</c-></code></a>;
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/window-object.html#window" id="ref-for-window③①"><c- g>Window</c-></a> {
   [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#SecureContext" id="ref-for-SecureContext⑤①"><c- g>SecureContext</c-></a>] <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#trustedtypepolicyfactory" id="ref-for-trustedtypepolicyfactory②①"><c- n>TrustedTypePolicyFactory</c-></a> <a data-readonly data-type="TrustedTypePolicyFactory" href="#dom-window-trustedtypes"><code><c- g>trustedTypes</c-></code></a>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://dom.spec.whatwg.org/#document" id="ref-for-document④①"><c- g>Document</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①④"><c- g>CEReactions</c-></a>] <c- b>void</c-> <a href="#dom-document-write"><code><c- g>write</c-></code></a>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑦①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⓪①"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑥"><c- n>HTMLString</c-></a>... <a href="#dom-document-write-text-text"><code><c- g>text</c-></code></a>);
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①⑤"><c- g>CEReactions</c-></a>] <c- b>void</c-> <a href="#dom-document-writeln"><code><c- g>writeln</c-></code></a>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes⑧①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①①①"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring①①"><c- n>HTMLString</c-></a>... <a href="#dom-document-writeln-text-text"><code><c- g>text</c-></code></a>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①④"><c- g>CEReactions</c-></a>] <c- b>void</c-> <a href="#dom-document-write"><code><c- g>write</c-></code></a>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑧"><c- n>HTMLString</c-></a>... <a href="#dom-document-write-text-text"><code><c- g>text</c-></code></a>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①⑤"><c- g>CEReactions</c-></a>] <c- b>void</c-> <a href="#dom-document-writeln"><code><c- g>writeln</c-></code></a>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring①①"><c- n>HTMLString</c-></a>... <a href="#dom-document-writeln-text-text"><code><c- g>text</c-></code></a>);
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/scripting.html#htmlscriptelement" id="ref-for-htmlscriptelement②①"><c- g>HTMLScriptElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement④"><c- n>HTMLElement</c-></a> {
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions②①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①②①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑧①"><c- n>TrustedScript</c-></a>] <c- b>attribute</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs①①"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring④"><c- n>ScriptString</c-></a> <a data-type="[TreatNullAs=EmptyString] ScriptString" href="#dom-htmlscriptelement-innertext"><code><c- g>innerText</c-></code></a>;
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions③①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①③①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript⑨①"><c- n>TrustedScript</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring①①"><c- n>ScriptString</c-></a>? <a data-type="ScriptString?" href="#dom-htmlscriptelement-textcontent"><code><c- g>textContent</c-></code></a>;
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions④①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①④①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑦①"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring④"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlscriptelement-src"><code><c- g>src</c-></code></a>;
- [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑤①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑤①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscript" id="ref-for-trustedscript①⓪①"><c- n>TrustedScript</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring②①"><c- n>ScriptString</c-></a> <a data-type="ScriptString" href="#dom-htmlscriptelement-text"><code><c- g>text</c-></code></a>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions②①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs②①"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring④"><c- n>ScriptString</c-></a> <a data-type="[TreatNullAs=EmptyString] ScriptString" href="#dom-htmlscriptelement-innertext"><code><c- g>innerText</c-></code></a>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions③①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring①①"><c- n>ScriptString</c-></a>? <a data-type="ScriptString?" href="#dom-htmlscriptelement-textcontent"><code><c- g>textContent</c-></code></a>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions④①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring⑤"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlscriptelement-src"><code><c- g>src</c-></code></a>;
+ [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑤①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring②①"><c- n>ScriptString</c-></a> <a data-type="ScriptString" href="#dom-htmlscriptelement-text"><code><c- g>text</c-></code></a>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmliframeelement" id="ref-for-htmliframeelement①"><c- g>HTMLIFrameElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement①①"><c- n>HTMLElement</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑥①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑥①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①②①"><c- n>TrustedHTML</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring②①"><c- n>HTMLString</c-></a> <a data-type="HTMLString" href="#dom-htmliframeelement-srcdoc"><code><c- g>srcdoc</c-></code></a>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑥①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring②①"><c- n>HTMLString</c-></a> <a data-type="HTMLString" href="#dom-htmliframeelement-srcdoc"><code><c- g>srcdoc</c-></code></a>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlembedelement" id="ref-for-htmlembedelement①"><c- g>HTMLEmbedElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement②①"><c- n>HTMLElement</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑦①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑦①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑧①"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring①①"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlembedelement-src"><code><c- g>src</c-></code></a>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑦①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring①①"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlembedelement-src"><code><c- g>src</c-></code></a>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://html.spec.whatwg.org/multipage/iframe-embed-object.html#htmlobjectelement" id="ref-for-htmlobjectelement①"><c- g>HTMLObjectElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://html.spec.whatwg.org/multipage/dom.html#htmlelement" id="ref-for-htmlelement③①"><c- n>HTMLElement</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑧①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑧①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl⑨①"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring②①"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlobjectelement-data"><code><c- g>data</c-></code></a>;
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑨①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes①⑨①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl①⓪①"><c- n>TrustedScriptURL</c-></a>] <c- b>attribute</c-> <a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②②①"><c- b>DOMString</c-></a> <a data-type="DOMString" href="#dom-htmlobjectelement-codebase"><code><c- g>codeBase</c-></code></a>; // obsolete
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑧①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring②①"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlobjectelement-data"><code><c- g>data</c-></code></a>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions⑨①"><c- g>CEReactions</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring③①"><c- n>ScriptURLString</c-></a> <a data-type="ScriptURLString" href="#dom-htmlobjectelement-codebase"><code><c- g>codeBase</c-></code></a>; // obsolete
 };
 
 <c- b>typedef</c-> (<a class="n" data-link-type="idl-name" href="#typedefdef-scriptstring" id="ref-for-typedefdef-scriptstring③①"><c- n>ScriptString</c-></a> <c- b>or</c-> <a class="n" data-link-type="idl-name" href="https://heycam.github.io/webidl/#Function" id="ref-for-Function③"><c- n>Function</c-></a>) <a href="#typedefdef-trustedtimerhandler"><code><c- g>TrustedTimerHandler</c-></code></a>;
@@ -4389,44 +4495,40 @@ <h2 class="no-num no-ref heading settled" id="idl-index"><span class="content">I
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface" href="https://svgwg.org/svg2-draft/interact.html#InterfaceSVGScriptElement" id="ref-for-InterfaceSVGScriptElement①①"><c- g>SVGScriptElement</c-></a> : <a class="n" data-link-type="idl-name" href="https://svgwg.org/svg2-draft/types.html#InterfaceSVGElement" id="ref-for-InterfaceSVGElement①"><c- n>SVGElement</c-></a> {
  // overwrites the definition in SVGURIReference.
- [<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②⓪①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedscripturl" id="ref-for-trustedscripturl①①①"><c- n>TrustedScriptURL</c-></a>] <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring③①"><c- n>ScriptURLString</c-></a> <a data-readonly data-type="ScriptURLString" href="#dom-svgscriptelement-href"><code><c- g>href</c-></code></a>;
+ <c- b>readonly</c-> <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-scripturlstring" id="ref-for-typedefdef-scripturlstring④①"><c- n>ScriptURLString</c-></a> <a data-readonly data-type="ScriptURLString" href="#dom-svgscriptelement-href"><code><c- g>href</c-></code></a>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://dom.spec.whatwg.org/#element" id="ref-for-element⑤①"><c- g>Element</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①⓪①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②①①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①③①"><c- n>TrustedHTML</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstringdefaultsempty" id="ref-for-typedefdef-htmlstringdefaultsempty①①"><c- n>HTMLStringDefaultsEmpty</c-></a> <a data-type="HTMLStringDefaultsEmpty" href="#dom-element-outerhtml"><code><c- g>outerHTML</c-></code></a>;
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①①①"><c- g>CEReactions</c-></a>] <c- b>void</c-> <a href="#dom-element-insertadjacenthtml"><code><c- g>insertAdjacentHTML</c-></code></a>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②③①"><c- b>DOMString</c-></a> <a href="#dom-element-insertadjacenthtml-position-text-position"><code><c- g>position</c-></code></a>, [<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②②①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①④①"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring③①"><c- n>HTMLString</c-></a> <a href="#dom-element-insertadjacenthtml-position-text-text"><code><c- g>text</c-></code></a>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①⓪①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs③①"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring③①"><c- n>HTMLString</c-></a> <a data-type="HTMLString" href="#dom-element-outerhtml"><code><c- g>outerHTML</c-></code></a>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①①①"><c- g>CEReactions</c-></a>] <c- b>void</c-> <a href="#dom-element-insertadjacenthtml"><code><c- g>insertAdjacentHTML</c-></code></a>(<a class="idl-code" data-link-type="interface" href="https://heycam.github.io/webidl/#idl-DOMString" id="ref-for-idl-DOMString②⑥①"><c- b>DOMString</c-></a> <a href="#dom-element-insertadjacenthtml-position-text-position"><code><c- g>position</c-></code></a>, <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring④①"><c- n>HTMLString</c-></a> <a href="#dom-element-insertadjacenthtml-position-text-text"><code><c- g>text</c-></code></a>);
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <c- b>mixin</c-> <a class="idl-code" data-link-type="interface"><c- g>InnerHTML</c-></a> { // specified in a draft version at https://w3c.github.io/DOM-Parsing/#the-innerhtml-mixin
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①②①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②③①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑤①"><c- n>TrustedHTML</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstringdefaultsempty" id="ref-for-typedefdef-htmlstringdefaultsempty②①"><c- n>HTMLStringDefaultsEmpty</c-></a> <a data-type="HTMLStringDefaultsEmpty" href="#dom-innerhtml-innerhtml"><code><c- g>innerHTML</c-></code></a>;
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①②①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#TreatNullAs" id="ref-for-TreatNullAs④①"><c- g>TreatNullAs</c-></a>=<a class="n" data-link-type="idl-name"><c- n>EmptyString</c-></a>] <c- b>attribute</c-> <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑤①"><c- n>HTMLString</c-></a> <a data-type="HTMLString" href="#dom-innerhtml-innerhtml"><code><c- g>innerHTML</c-></code></a>;
 };
 
 <c- b>partial</c-> <c- b>interface</c-> <a class="idl-code" data-link-type="interface" href="https://dom.spec.whatwg.org/#range" id="ref-for-range①"><c- g>Range</c-></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①③①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject②"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#documentfragment" id="ref-for-documentfragment①"><c- n>DocumentFragment</c-></a> <a href="#dom-range-createcontextualfragment"><code><c- g>createContextualFragment</c-></code></a>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②④①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑥①"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring④①"><c- n>HTMLString</c-></a> <a href="#dom-range-createcontextualfragment-fragment-fragment"><code><c- g>fragment</c-></code></a>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://html.spec.whatwg.org/multipage/custom-elements.html#cereactions" id="ref-for-cereactions①③①"><c- g>CEReactions</c-></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject②"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#documentfragment" id="ref-for-documentfragment①"><c- n>DocumentFragment</c-></a> <a href="#dom-range-createcontextualfragment"><code><c- g>createContextualFragment</c-></code></a>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑥①"><c- n>HTMLString</c-></a> <a href="#dom-range-createcontextualfragment-fragment-fragment"><code><c- g>fragment</c-></code></a>);
 };
 
 [<a href="#dom-domparser-domparser"><code><c- g>Constructor</c-></code></a>, <a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#Exposed" id="ref-for-Exposed⑤①"><c- g>Exposed</c-></a>=<c- n>Window</c->]
 <c- b>interface</c-> <a href="#domparser"><code><c- g>DOMParser</c-></code></a> {
-  [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject①①"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#document" id="ref-for-document⑤①"><c- n>Document</c-></a> <a href="#dom-domparser-parsefromstring"><code><c- g>parseFromString</c-></code></a>([<a class="idl-code" data-link-type="extended-attribute" href="#extendedattrdef-trustedtypes" id="ref-for-extendedattrdef-trustedtypes②⑤①"><c- g>TrustedTypes</c-></a>=<a class="n" data-link-type="idl-name" href="#trustedhtml" id="ref-for-trustedhtml①⑦①"><c- n>TrustedHTML</c-></a>] <a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑤①"><c- n>HTMLString</c-></a> <a href="#dom-domparser-parsefromstring-str-type-str"><code><c- g>str</c-></code></a>, <a class="n" data-link-type="idl-name" href="https://www.w3.org/TR/DOM-Parsing/#h-the-domparser-interface" id="ref-for-h-the-domparser-interface①"><c- n>SupportedType</c-></a> <a href="#dom-domparser-parsefromstring-str-type-type"><code><c- g>type</c-></code></a>);
+  [<a class="idl-code" data-link-type="extended-attribute" href="https://heycam.github.io/webidl/#NewObject" id="ref-for-NewObject①①"><c- g>NewObject</c-></a>] <a class="n" data-link-type="idl-name" href="https://dom.spec.whatwg.org/#document" id="ref-for-document⑤①"><c- n>Document</c-></a> <a href="#dom-domparser-parsefromstring"><code><c- g>parseFromString</c-></code></a>(<a class="n" data-link-type="idl-name" href="#typedefdef-htmlstring" id="ref-for-typedefdef-htmlstring⑦①"><c- n>HTMLString</c-></a> <a href="#dom-domparser-parsefromstring-str-type-str"><code><c- g>str</c-></code></a>, <a class="n" data-link-type="idl-name" href="https://www.w3.org/TR/DOM-Parsing/#h-the-domparser-interface" id="ref-for-h-the-domparser-interface①"><c- n>SupportedType</c-></a> <a href="#dom-domparser-parsefromstring-str-type-type"><code><c- g>type</c-></code></a>);
 };
 
 </pre>
   <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content">Issues Index</span><a class="self-link" href="#issues-index"></a></h2>
   <div style="counter-reset:issue">
-   <div class="issue"> Rewrite to mirror https://github.com/heycam/webidl/pull/841.<a href="#issue-98ce703e"> ↵ </a></div>
-   <div class="issue"> Update when workers have TT.<a href="#issue-b92c7a17"> ↵ </a></div>
-   <div class="issue"> Remove hardcoding 'script' when new sink groups are specified.<a href="#issue-adaa63a4"> ↵ </a></div>
-   <div class="issue"> Update when workers have TT.<a href="#issue-b92c7a17①"> ↵ </a></div>
-   <div class="issue"> Remove hardcoding 'script' when new sink types are specified.<a href="#issue-672bcf0f"> ↵ </a></div>
    <div class="issue"> Synchronize when TT are added to workers (perhaps use "has a CSP list"?)<a href="#issue-74c24ff1"> ↵ </a></div>
-   <div class="issue"> <a href="https://heycam.github.io/webidl/#TreatNullAs">TreatNullAs=EmptyString</a> is confusing.
-See note "It should not be used in specifications unless ...".
-For some sinks a <code>null</code> value will result in "", and "null" for others.
-This already caused problems in the polyfill. <a href="https://github.com/w3c/webappsec-trusted-types/issues/2">&lt;https://github.com/w3c/webappsec-trusted-types/issues/2></a><a href="#issue-52d7d8d6"> ↵ </a></div>
+   <div class="issue"> Keep in sync with https://github.com/heycam/webidl/pull/841.<a href="#issue-68115cf6"> ↵ </a></div>
+   <div class="issue"> Make sure this is OK, otherwise use strings and convert them to TrustedXYZ in this spec only.<a href="#issue-679ee1ba"> ↵ </a></div>
    <div class="issue"> Define for workers.<a href="#issue-a5679137"> ↵ </a></div>
    <div class="issue"> Remove the note when the API in Chrome is shipped.<a href="#issue-3d9ee9e6"> ↵ </a></div>
+   <div class="issue"> Figure out if we can drop <code class="idl"><a data-link-type="idl">[[ScriptURL]]</a></code> slot after IDL + DOM changes.<a href="#issue-bcb72f9a"> ↵ </a></div>
    <div class="issue"> Figure out what to do with script.setAttribute('src'). See <a href="https://github.com/whatwg/dom/issues/789">DOM#789</a>.<a href="#issue-62c0f2c6"> ↵ </a></div>
    <div class="issue"> Add base.href enforcement.<a href="#issue-13577559"> ↵ </a></div>
+   <div class="issue"> Update when workers have TT.<a href="#issue-b92c7a17"> ↵ </a></div>
+   <div class="issue"> Remove hardcoding 'script' when new sink groups are specified.<a href="#issue-adaa63a4"> ↵ </a></div>
    <div class="issue"> Check the text of the script when preparing it, like with HTML scripts.<a href="#issue-41de95e8"> ↵ </a></div>
    <div class="issue"> Remove when <a href="https://github.com/whatwg/dom/pull/809">DOM #809</a> is merged.<a href="#issue-52c8f9b0"> ↵ </a></div>
    <div class="issue"> This depends on a solution to <a href="https://github.com/w3c/webappsec-trusted-types/issues/144">issue #144</a> like <a href="https://github.com/tc39-transfer/dynamic-code-brand-checks#problem-host-callout-does-not-receive-type-information">TC39 HostBeforeCompile</a><a href="#issue-e28ea232"> ↵ </a></div>
@@ -4452,15 +4554,14 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-injection-sink①②">2.3.4. Default policy</a> <a href="#ref-for-injection-sink①③">(2)</a>
     <li><a href="#ref-for-injection-sink①④">2.4. Enforcement</a> <a href="#ref-for-injection-sink①⑤">(2)</a> <a href="#ref-for-injection-sink①⑥">(3)</a>
     <li><a href="#ref-for-injection-sink①⑦">2.4.1. Content Security Policy</a>
-    <li><a href="#ref-for-injection-sink①⑧">2.4.2. TrustedTypes extended attribute</a>
-    <li><a href="#ref-for-injection-sink①⑨">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-injection-sink②⓪">3.4. Process value with a default policy</a>
-    <li><a href="#ref-for-injection-sink②①">4.5.1. require-trusted-types-for directive</a> <a href="#ref-for-injection-sink②②">(2)</a>
-    <li><a href="#ref-for-injection-sink②③">4.5.2. trusted-types directive</a> <a href="#ref-for-injection-sink②④">(2)</a>
-    <li><a href="#ref-for-injection-sink②⑤">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
-    <li><a href="#ref-for-injection-sink②⑥">5. Security Considerations</a>
-    <li><a href="#ref-for-injection-sink②⑦">5.4. Best practices for policy design</a> <a href="#ref-for-injection-sink②⑧">(2)</a>
-    <li><a href="#ref-for-injection-sink②⑨">6.1. Vendor-specific Extensions and Addons</a>
+    <li><a href="#ref-for-injection-sink①⑧">3.3. Get Trusted Type compliant string</a>
+    <li><a href="#ref-for-injection-sink①⑨">3.4. Process value with a default policy</a>
+    <li><a href="#ref-for-injection-sink②⓪">4.6.1. require-trusted-types-for directive</a> <a href="#ref-for-injection-sink②①">(2)</a>
+    <li><a href="#ref-for-injection-sink②②">4.6.2. trusted-types directive</a> <a href="#ref-for-injection-sink②③">(2)</a>
+    <li><a href="#ref-for-injection-sink②④">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-injection-sink②⑤">5. Security Considerations</a>
+    <li><a href="#ref-for-injection-sink②⑥">5.4. Best practices for policy design</a> <a href="#ref-for-injection-sink②⑦">(2)</a>
+    <li><a href="#ref-for-injection-sink②⑧">6.1. Vendor-specific Extensions and Addons</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="trusted-type">
@@ -4471,7 +4572,7 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-trusted-type②">2.3.3. TrustedTypePolicyOptions</a>
     <li><a href="#ref-for-trusted-type③">2.4. Enforcement</a>
     <li><a href="#ref-for-trusted-type④">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-trusted-type⑤">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-trusted-type⑤">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="trustedhtml">
@@ -4480,11 +4581,8 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-trustedhtml">2.3. Policies</a>
     <li><a href="#ref-for-trustedhtml①">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-trustedhtml②">(2)</a> <a href="#ref-for-trustedhtml③">(3)</a> <a href="#ref-for-trustedhtml④">(4)</a>
     <li><a href="#ref-for-trustedhtml⑤">2.3.2. TrustedTypePolicy</a>
-    <li><a href="#ref-for-trustedhtml⑥">2.4.2. TrustedTypes extended attribute</a>
-    <li><a href="#ref-for-trustedhtml⑦">4. Integrations</a> <a href="#ref-for-trustedhtml⑧">(2)</a> <a href="#ref-for-trustedhtml⑨">(3)</a>
-    <li><a href="#ref-for-trustedhtml①⓪">4.1.2. Extensions to the Document interface</a> <a href="#ref-for-trustedhtml①①">(2)</a>
-    <li><a href="#ref-for-trustedhtml①②">4.1.4. Enforcement in element attributes</a>
-    <li><a href="#ref-for-trustedhtml①③">4.4. Integration with DOM Parsing</a> <a href="#ref-for-trustedhtml①④">(2)</a> <a href="#ref-for-trustedhtml①⑤">(3)</a> <a href="#ref-for-trustedhtml①⑥">(4)</a> <a href="#ref-for-trustedhtml①⑦">(5)</a>
+    <li><a href="#ref-for-trustedhtml⑥">4. Integrations</a> <a href="#ref-for-trustedhtml⑦">(2)</a>
+    <li><a href="#ref-for-trustedhtml⑧">4.1.1. [StringContext]</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="trustedscript">
@@ -4492,13 +4590,12 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <ul>
     <li><a href="#ref-for-trustedscript">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-trustedscript①">(2)</a> <a href="#ref-for-trustedscript②">(3)</a> <a href="#ref-for-trustedscript③">(4)</a>
     <li><a href="#ref-for-trustedscript④">2.3.2. TrustedTypePolicy</a>
-    <li><a href="#ref-for-trustedscript⑤">2.4.2. TrustedTypes extended attribute</a>
-    <li><a href="#ref-for-trustedscript⑥">4. Integrations</a> <a href="#ref-for-trustedscript⑦">(2)</a>
-    <li><a href="#ref-for-trustedscript⑧">4.1.3.2. Setting slot values</a> <a href="#ref-for-trustedscript⑨">(2)</a> <a href="#ref-for-trustedscript①⓪">(3)</a>
-    <li><a href="#ref-for-trustedscript①①">4.1.5. Enforcement in timer functions</a> <a href="#ref-for-trustedscript①②">(2)</a>
-    <li><a href="#ref-for-trustedscript①③">4.1.6. Enforcement in event handler content attributes</a>
-    <li><a href="#ref-for-trustedscript①④">4.5.1.1. require-trusted-types-for Pre-Navigation check</a> <a href="#ref-for-trustedscript①⑤">(2)</a>
-    <li><a href="#ref-for-trustedscript①⑥">4.5.6. Support for eval(TrustedScript)</a>
+    <li><a href="#ref-for-trustedscript⑤">4. Integrations</a> <a href="#ref-for-trustedscript⑥">(2)</a>
+    <li><a href="#ref-for-trustedscript⑦">4.1.1. [StringContext]</a>
+    <li><a href="#ref-for-trustedscript⑧">4.2.5. Enforcement in timer functions</a> <a href="#ref-for-trustedscript⑨">(2)</a>
+    <li><a href="#ref-for-trustedscript①⓪">4.2.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-trustedscript①①">4.6.1.1. require-trusted-types-for Pre-Navigation check</a> <a href="#ref-for-trustedscript①②">(2)</a>
+    <li><a href="#ref-for-trustedscript①③">4.6.6. Support for eval(TrustedScript)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="trustedscripturl">
@@ -4506,13 +4603,10 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <ul>
     <li><a href="#ref-for-trustedscripturl">2.3.1. TrustedTypePolicyFactory</a>
     <li><a href="#ref-for-trustedscripturl①">2.3.2. TrustedTypePolicy</a>
-    <li><a href="#ref-for-trustedscripturl②">2.4.2. TrustedTypes extended attribute</a>
-    <li><a href="#ref-for-trustedscripturl③">3.5. Prepare the script URL and text</a> <a href="#ref-for-trustedscripturl④">(2)</a>
-    <li><a href="#ref-for-trustedscripturl⑤">4. Integrations</a> <a href="#ref-for-trustedscripturl⑥">(2)</a>
-    <li><a href="#ref-for-trustedscripturl⑦">4.1.3.2. Setting slot values</a>
-    <li><a href="#ref-for-trustedscripturl⑧">4.1.4. Enforcement in element attributes</a> <a href="#ref-for-trustedscripturl⑨">(2)</a> <a href="#ref-for-trustedscripturl①⓪">(3)</a>
-    <li><a href="#ref-for-trustedscripturl①①">4.2. Integration with SVG</a>
-    <li><a href="#ref-for-trustedscripturl①②">5.3. Plugin navigation</a> <a href="#ref-for-trustedscripturl①③">(2)</a>
+    <li><a href="#ref-for-trustedscripturl②">3.5. Prepare the script URL and text</a> <a href="#ref-for-trustedscripturl③">(2)</a>
+    <li><a href="#ref-for-trustedscripturl④">4. Integrations</a> <a href="#ref-for-trustedscripturl⑤">(2)</a>
+    <li><a href="#ref-for-trustedscripturl⑥">4.1.1. [StringContext]</a>
+    <li><a href="#ref-for-trustedscripturl⑦">5.3. Plugin navigation</a> <a href="#ref-for-trustedscripturl⑧">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="policies">
@@ -4523,7 +4617,7 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-policies②">2.3. Policies</a>
     <li><a href="#ref-for-policies③">2.4. Enforcement</a>
     <li><a href="#ref-for-policies④">2.4.1. Content Security Policy</a>
-    <li><a href="#ref-for-policies⑤">4.5.2. trusted-types directive</a>
+    <li><a href="#ref-for-policies⑤">4.6.2. trusted-types directive</a>
     <li><a href="#ref-for-policies⑥">5.4. Best practices for policy design</a>
    </ul>
   </aside>
@@ -4531,8 +4625,8 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <b><a href="#trustedtypepolicyfactory">#trustedtypepolicyfactory</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-trustedtypepolicyfactory">3.1. Create a Trusted Type Policy</a>
-    <li><a href="#ref-for-trustedtypepolicyfactory①">4.1. Integration with HTML</a>
-    <li><a href="#ref-for-trustedtypepolicyfactory②">4.1.1. Extensions to the Window interface</a>
+    <li><a href="#ref-for-trustedtypepolicyfactory①">4.2. Integration with HTML</a>
+    <li><a href="#ref-for-trustedtypepolicyfactory②">4.2.1. Extensions to the Window interface</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-trustedtypepolicyfactory-createpolicy">
@@ -4680,9 +4774,9 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <aside class="dfn-panel" data-for="default-policy">
    <b><a href="#default-policy">#default-policy</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-default-policy">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
-    <li><a href="#ref-for-default-policy①">4.5.2. trusted-types directive</a>
-    <li><a href="#ref-for-default-policy②">4.5.6. Support for eval(TrustedScript)</a> <a href="#ref-for-default-policy③">(2)</a>
+    <li><a href="#ref-for-default-policy">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-default-policy①">4.6.2. trusted-types directive</a>
+    <li><a href="#ref-for-default-policy②">4.6.6. Support for eval(TrustedScript)</a> <a href="#ref-for-default-policy③">(2)</a>
     <li><a href="#ref-for-default-policy④">6.1. Vendor-specific Extensions and Addons</a>
    </ul>
   </aside>
@@ -4697,19 +4791,6 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-enforcement⑥">3.3. Get Trusted Type compliant string</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="extendedattrdef-trustedtypes">
-   <b><a href="#extendedattrdef-trustedtypes">#extendedattrdef-trustedtypes</a></b><b>Referenced in:</b>
-   <ul>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes">2.3.1. TrustedTypePolicyFactory</a> <a href="#ref-for-extendedattrdef-trustedtypes①">(2)</a> <a href="#ref-for-extendedattrdef-trustedtypes②">(3)</a> <a href="#ref-for-extendedattrdef-trustedtypes③">(4)</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes④">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-extendedattrdef-trustedtypes⑤">(2)</a> <a href="#ref-for-extendedattrdef-trustedtypes⑥">(3)</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes⑦">4.1.2. Extensions to the Document interface</a> <a href="#ref-for-extendedattrdef-trustedtypes⑧">(2)</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes⑨">4.1.3.1. Slots with trusted values</a> <a href="#ref-for-extendedattrdef-trustedtypes①⓪">(2)</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes①①">4.1.3.2. Setting slot values</a> <a href="#ref-for-extendedattrdef-trustedtypes①②">(2)</a> <a href="#ref-for-extendedattrdef-trustedtypes①③">(3)</a> <a href="#ref-for-extendedattrdef-trustedtypes①④">(4)</a> <a href="#ref-for-extendedattrdef-trustedtypes①⑤">(5)</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes①⑥">4.1.4. Enforcement in element attributes</a> <a href="#ref-for-extendedattrdef-trustedtypes①⑦">(2)</a> <a href="#ref-for-extendedattrdef-trustedtypes①⑧">(3)</a> <a href="#ref-for-extendedattrdef-trustedtypes①⑨">(4)</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes②⓪">4.2. Integration with SVG</a>
-    <li><a href="#ref-for-extendedattrdef-trustedtypes②①">4.4. Integration with DOM Parsing</a> <a href="#ref-for-extendedattrdef-trustedtypes②②">(2)</a> <a href="#ref-for-extendedattrdef-trustedtypes②③">(3)</a> <a href="#ref-for-extendedattrdef-trustedtypes②④">(4)</a> <a href="#ref-for-extendedattrdef-trustedtypes②⑤">(5)</a>
-   </ul>
-  </aside>
   <aside class="dfn-panel" data-for="abstract-opdef-create-a-trusted-type-policy">
    <b><a href="#abstract-opdef-create-a-trusted-type-policy">#abstract-opdef-create-a-trusted-type-policy</a></b><b>Referenced in:</b>
    <ul>
@@ -4726,48 +4807,48 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <aside class="dfn-panel" data-for="abstract-opdef-get-trusted-type-compliant-string">
    <b><a href="#abstract-opdef-get-trusted-type-compliant-string">#abstract-opdef-get-trusted-type-compliant-string</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string①">(2)</a>
-    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string②">3.2. Create a Trusted Type</a>
-    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string③">3.5. Prepare the script URL and text</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string④">(2)</a>
-    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑤">4.1.5. Enforcement in timer functions</a>
-    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑥">4.1.6. Enforcement in event handler content attributes</a>
-    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑦">4.5.6. Support for eval(TrustedScript)</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑧">(2)</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑨">(3)</a>
+    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string">3.2. Create a Trusted Type</a>
+    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string①">3.5. Prepare the script URL and text</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string②">(2)</a>
+    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string③">4.2.5. Enforcement in timer functions</a>
+    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string④">4.2.6. Enforcement in event handler content attributes</a>
+    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑤">4.2.7. Validate the string in context</a>
+    <li><a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑥">4.6.6. Support for eval(TrustedScript)</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑦">(2)</a> <a href="#ref-for-abstract-opdef-get-trusted-type-compliant-string⑧">(3)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="abstract-opdef-process-value-with-a-default-policy">
    <b><a href="#abstract-opdef-process-value-with-a-default-policy">#abstract-opdef-process-value-with-a-default-policy</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-abstract-opdef-process-value-with-a-default-policy">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-abstract-opdef-process-value-with-a-default-policy①">4.5.1.1. require-trusted-types-for Pre-Navigation check</a>
+    <li><a href="#ref-for-abstract-opdef-process-value-with-a-default-policy①">4.6.1.1. require-trusted-types-for Pre-Navigation check</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="abstract-opdef-prepare-the-script-url-and-text">
    <b><a href="#abstract-opdef-prepare-the-script-url-and-text">#abstract-opdef-prepare-the-script-url-and-text</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-abstract-opdef-prepare-the-script-url-and-text">4.1.3.3. Slot value verification</a>
+    <li><a href="#ref-for-abstract-opdef-prepare-the-script-url-and-text">4.2.3.3. Slot value verification</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="typedefdef-htmlstring">
    <b><a href="#typedefdef-htmlstring">#typedefdef-htmlstring</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-typedefdef-htmlstring">4.1.2. Extensions to the Document interface</a> <a href="#ref-for-typedefdef-htmlstring①">(2)</a>
-    <li><a href="#ref-for-typedefdef-htmlstring②">4.1.4. Enforcement in element attributes</a>
-    <li><a href="#ref-for-typedefdef-htmlstring③">4.4. Integration with DOM Parsing</a> <a href="#ref-for-typedefdef-htmlstring④">(2)</a> <a href="#ref-for-typedefdef-htmlstring⑤">(3)</a>
+    <li><a href="#ref-for-typedefdef-htmlstring">4.2.2. Extensions to the Document interface</a> <a href="#ref-for-typedefdef-htmlstring①">(2)</a>
+    <li><a href="#ref-for-typedefdef-htmlstring②">4.2.4. Enforcement in element attributes</a>
+    <li><a href="#ref-for-typedefdef-htmlstring③">4.5. Integration with DOM Parsing</a> <a href="#ref-for-typedefdef-htmlstring④">(2)</a> <a href="#ref-for-typedefdef-htmlstring⑤">(3)</a> <a href="#ref-for-typedefdef-htmlstring⑥">(4)</a> <a href="#ref-for-typedefdef-htmlstring⑦">(5)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="typedefdef-scriptstring">
    <b><a href="#typedefdef-scriptstring">#typedefdef-scriptstring</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-typedefdef-scriptstring">4.1.3.2. Setting slot values</a> <a href="#ref-for-typedefdef-scriptstring①">(2)</a> <a href="#ref-for-typedefdef-scriptstring②">(3)</a>
-    <li><a href="#ref-for-typedefdef-scriptstring③">4.1.5. Enforcement in timer functions</a>
+    <li><a href="#ref-for-typedefdef-scriptstring">4.2.3.2. Setting slot values</a> <a href="#ref-for-typedefdef-scriptstring①">(2)</a> <a href="#ref-for-typedefdef-scriptstring②">(3)</a>
+    <li><a href="#ref-for-typedefdef-scriptstring③">4.2.5. Enforcement in timer functions</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="typedefdef-scripturlstring">
    <b><a href="#typedefdef-scripturlstring">#typedefdef-scripturlstring</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-typedefdef-scripturlstring">4.1.3.2. Setting slot values</a>
-    <li><a href="#ref-for-typedefdef-scripturlstring①">4.1.4. Enforcement in element attributes</a> <a href="#ref-for-typedefdef-scripturlstring②">(2)</a>
-    <li><a href="#ref-for-typedefdef-scripturlstring③">4.2. Integration with SVG</a>
+    <li><a href="#ref-for-typedefdef-scripturlstring">4.2.3.2. Setting slot values</a>
+    <li><a href="#ref-for-typedefdef-scripturlstring①">4.2.4. Enforcement in element attributes</a> <a href="#ref-for-typedefdef-scripturlstring②">(2)</a> <a href="#ref-for-typedefdef-scripturlstring③">(3)</a>
+    <li><a href="#ref-for-typedefdef-scripturlstring④">4.3. Integration with SVG</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="typedefdef-trustedtype">
@@ -4775,28 +4856,34 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <ul>
     <li><a href="#ref-for-typedefdef-trustedtype">3.3. Get Trusted Type compliant string</a> <a href="#ref-for-typedefdef-trustedtype①">(2)</a>
     <li><a href="#ref-for-typedefdef-trustedtype②">3.4. Process value with a default policy</a> <a href="#ref-for-typedefdef-trustedtype③">(2)</a>
-    <li><a href="#ref-for-typedefdef-trustedtype④">4.1.5. Enforcement in timer functions</a>
+    <li><a href="#ref-for-typedefdef-trustedtype④">4.2.5. Enforcement in timer functions</a>
+   </ul>
+  </aside>
+  <aside class="dfn-panel" data-for="related-construct">
+   <b><a href="#related-construct">#related-construct</a></b><b>Referenced in:</b>
+   <ul>
+    <li><a href="#ref-for-related-construct">4.1.3. Type conversion</a>
    </ul>
   </aside>
-  <aside class="dfn-panel" data-for="typedefdef-htmlstringdefaultsempty">
-   <b><a href="#typedefdef-htmlstringdefaultsempty">#typedefdef-htmlstringdefaultsempty</a></b><b>Referenced in:</b>
+  <aside class="dfn-panel" data-for="dfn-validate-the-string-in-context">
+   <b><a href="#dfn-validate-the-string-in-context">#dfn-validate-the-string-in-context</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-typedefdef-htmlstringdefaultsempty">4. Integrations</a>
-    <li><a href="#ref-for-typedefdef-htmlstringdefaultsempty①">4.4. Integration with DOM Parsing</a> <a href="#ref-for-typedefdef-htmlstringdefaultsempty②">(2)</a>
+    <li><a href="#ref-for-dfn-validate-the-string-in-context">4.1.3. Type conversion</a>
+    <li><a href="#ref-for-dfn-validate-the-string-in-context①">4.2.7. Validate the string in context</a> <a href="#ref-for-dfn-validate-the-string-in-context②">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="window-trusted-type-policy-factory">
    <b><a href="#window-trusted-type-policy-factory">#window-trusted-type-policy-factory</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-window-trusted-type-policy-factory">2.4.2. TrustedTypes extended attribute</a> <a href="#ref-for-window-trusted-type-policy-factory①">(2)</a>
-    <li><a href="#ref-for-window-trusted-type-policy-factory②">3.4. Process value with a default policy</a>
+    <li><a href="#ref-for-window-trusted-type-policy-factory">3.4. Process value with a default policy</a>
+    <li><a href="#ref-for-window-trusted-type-policy-factory①">4.2.7. Validate the string in context</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-window-trustedtypes">
    <b><a href="#dom-window-trustedtypes">#dom-window-trustedtypes</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-window-trustedtypes">2.4. Enforcement</a>
-    <li><a href="#ref-for-dom-window-trustedtypes①">4.1.1. Extensions to the Window interface</a>
+    <li><a href="#ref-for-dom-window-trustedtypes①">4.2.1. Extensions to the Window interface</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-document-write">
@@ -4809,27 +4896,27 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
    <b><a href="#dom-htmlscriptelement-src">#dom-htmlscriptelement-src</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-htmlscriptelement-src">2.1.2. DOM XSS injection sinks</a>
-    <li><a href="#ref-for-dom-htmlscriptelement-src①">4.1.3.1. Slots with trusted values</a>
-    <li><a href="#ref-for-dom-htmlscriptelement-src②">4.1.3.2. Setting slot values</a>
+    <li><a href="#ref-for-dom-htmlscriptelement-src①">4.2.3.1. Slots with trusted values</a>
+    <li><a href="#ref-for-dom-htmlscriptelement-src②">4.2.3.2. Setting slot values</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-htmlscriptelement-text">
    <b><a href="#dom-htmlscriptelement-text">#dom-htmlscriptelement-text</a></b><b>Referenced in:</b>
    <ul>
     <li><a href="#ref-for-dom-htmlscriptelement-text">2.1.2. DOM XSS injection sinks</a>
-    <li><a href="#ref-for-dom-htmlscriptelement-text①">4.1.3.2. Setting slot values</a>
+    <li><a href="#ref-for-dom-htmlscriptelement-text①">4.2.3.2. Setting slot values</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="typedefdef-trustedtimerhandler">
    <b><a href="#typedefdef-trustedtimerhandler">#typedefdef-trustedtimerhandler</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-typedefdef-trustedtimerhandler">4.1.5. Enforcement in timer functions</a> <a href="#ref-for-typedefdef-trustedtimerhandler①">(2)</a>
+    <li><a href="#ref-for-typedefdef-trustedtimerhandler">4.2.5. Enforcement in timer functions</a> <a href="#ref-for-typedefdef-trustedtimerhandler①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="concept-element-attributes-validation-ext">
    <b><a href="#concept-element-attributes-validation-ext">#concept-element-attributes-validation-ext</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-concept-element-attributes-validation-ext">4.3. Integration with DOM</a> <a href="#ref-for-concept-element-attributes-validation-ext①">(2)</a>
+    <li><a href="#ref-for-concept-element-attributes-validation-ext">4.4. Integration with DOM</a> <a href="#ref-for-concept-element-attributes-validation-ext①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="dom-domparser-parsefromstring">
@@ -4845,8 +4932,8 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
     <li><a href="#ref-for-trusted-types-sink-group①">2.1.1. HTML injection sinks</a>
     <li><a href="#ref-for-trusted-types-sink-group②">2.1.2. DOM XSS injection sinks</a>
     <li><a href="#ref-for-trusted-types-sink-group③">3.3. Get Trusted Type compliant string</a>
-    <li><a href="#ref-for-trusted-types-sink-group④">4.5.1. require-trusted-types-for directive</a> <a href="#ref-for-trusted-types-sink-group⑤">(2)</a>
-    <li><a href="#ref-for-trusted-types-sink-group⑥">4.5.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-trusted-types-sink-group④">4.6.1. require-trusted-types-for directive</a> <a href="#ref-for-trusted-types-sink-group⑤">(2)</a>
+    <li><a href="#ref-for-trusted-types-sink-group⑥">4.6.3. Should sink type mismatch violation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="trusted-types-directive">
@@ -4858,34 +4945,34 @@ <h2 class="no-num no-ref heading settled" id="issues-index"><span class="content
   <aside class="dfn-panel" data-for="serialized-tt-configuration">
    <b><a href="#serialized-tt-configuration">#serialized-tt-configuration</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-serialized-tt-configuration">4.5.2. trusted-types directive</a>
+    <li><a href="#ref-for-serialized-tt-configuration">4.6.2. trusted-types directive</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="tt-expression">
    <b><a href="#tt-expression">#tt-expression</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-tt-expression">4.5.2. trusted-types directive</a> <a href="#ref-for-tt-expression①">(2)</a>
+    <li><a href="#ref-for-tt-expression">4.6.2. trusted-types directive</a> <a href="#ref-for-tt-expression①">(2)</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="tt-wildcard">
    <b><a href="#tt-wildcard">#tt-wildcard</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-tt-wildcard">4.5.2. trusted-types directive</a>
-    <li><a href="#ref-for-tt-wildcard①">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-tt-wildcard">4.6.2. trusted-types directive</a>
+    <li><a href="#ref-for-tt-wildcard①">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="tt-policy-name">
    <b><a href="#tt-policy-name">#tt-policy-name</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-tt-policy-name">4.5.2. trusted-types directive</a>
-    <li><a href="#ref-for-tt-policy-name①">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-tt-policy-name">4.6.2. trusted-types directive</a>
+    <li><a href="#ref-for-tt-policy-name①">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="tt-keyword">
    <b><a href="#tt-keyword">#tt-keyword</a></b><b>Referenced in:</b>
    <ul>
-    <li><a href="#ref-for-tt-keyword">4.5.2. trusted-types directive</a>
-    <li><a href="#ref-for-tt-keyword①">4.5.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
+    <li><a href="#ref-for-tt-keyword">4.6.2. trusted-types directive</a>
+    <li><a href="#ref-for-tt-keyword①">4.6.4. Should Trusted Type policy creation be blocked by Content Security Policy?</a>
    </ul>
   </aside>
   <aside class="dfn-panel" data-for="abstract-opdef-should-sink-type-mismatch-violation-be-blocked-by-content-security-policy">
diff --git a/spec/index.bs b/spec/index.bs
index a6b2506e..21fda477 100644
--- a/spec/index.bs
+++ b/spec/index.bs
@@ -545,8 +545,8 @@ initially empty.
     1. If |elementNs| is an empty string, set |elementNs| to [=HTML namespace=].
     1. Let |interface| be the [=element interface=] for |localName| and |elementNs|.
     1. If |interface| has an IDL [=attribute=] member which identifier is |attribute|, and
-        {{TrustedTypes}} IDL extended attribute appears on that attribute, return
-        stringified {{TrustedTypes}}'s identifier and abort futher steps.
+        {{StringContext}} IDL extended attribute appears on that attribute, return
+        stringified {{StringContext}}'s identifier and abort futher steps.
 
         Note: This also takes into account all members of [=interface mixins=] that
         |interface| [=includes=].
@@ -576,8 +576,8 @@ initially empty.
     1. If |interface| does not have an IDL [=attribute=] that [=reflects=] a content attribute with
         |localName| [=attribute/local name=] and |attrNs| [=attribute/namespace=],
         return undefined and abort further steps. Otherwise, let |idlAttribute| be that IDL [=attribute=].
-    1. If {{TrustedTypes}} IDL extended attribute appears on |idlAttribute|, return
-        stringified {{TrustedTypes}}'s identifier and abort futher steps.
+    1. If {{StringContext}} IDL extended attribute appears on |idlAttribute|, return
+        stringified {{StringContext}}'s identifier and abort futher steps.
     1. Return null.
 
     <div class="example" id="get-attribute-type-example">
@@ -802,85 +802,6 @@ via using the {{CSP#cspro-header|Content-Security-Report-Only}} HTTP Response he
 Note: Most of the enforcement rules are defined as modifications of the
 algorithms in other specifications, see [[#integrations]].
 
-### TrustedTypes extended attribute ### {#!trustedtypes-extended-attribute}
-
-Issue: Rewrite to mirror https://github.com/heycam/webidl/pull/841.
-
-Note: This section describes the implementation details of the Trusted Types mechanism. IDL extended attributes are not exposed to the JavasScript code.
-
-To annotate the [=injection sink=] functions that require Trusted Types, we introduce
-<dfn data-dfn-type="extended-attribute" data-x="TrustedTypes" data-lt="TrustedTypes"><code>[TrustedTypes]</code></dfn>
-IDL [=extended attributes|extended attribute=]. Its presence indicates that the relevant construct is to be supplemented with additional
-Trusted Types enforcement logic.
-
-The {{TrustedTypes}} extended attribute [=extended attribute/takes an identifier=] as an argument.
-The only valid values for the identifier are {{TrustedHTML}}, {{TrustedScript}}, or {{TrustedScriptURL}}.
-This extended attribute must not appear on anything other than an [=attribute=] or an [=operation=] argument.
-Additionally, it must not appear on [=read only=] attributes.
-
-When the extended attribute appears on an attribute, the setter for that attribute must run the following steps in place of the ones specified in its description:
-
- 1. If [=context object=]'s [=relevant global object=] has a [=Window/trusted type policy factory=]:
-
-    Issue: Update when workers have TT.
-    1. Set |sink| to the result of [=concatenating=] the list &laquo; <a spec=webidl>this</a> IDL value's <a spec=webidl>identifier</a>, [=attribute=] identifier. &raquo; with `" "` as |separator|.
-        <div class="example" id="extended-attribute-attribute-example">
-        For example, the following annotation and JavaScript code:
-        <pre highlight=idl>
-        partial interface mixin HTMLScriptElement {
-          [CEReactions, TrustedTypes=TrustedScriptURL] attribute ScriptURLString src;
-        };
-        </pre>
-        <pre highlight=js>
-        document.createElement('script').src = foo;
-        document.createElement('script').setAttribute('SrC', foo);
-        </pre>
-        causes the |sink| value to be `"HTMLScriptElement src"`.
-        </div>
-    1. Set |value| to the result of running the [$Get Trusted Type compliant string$] algorithm, passing the following arguments:
-        * the new value as |input|,
-        * {{TrustedTypes}} extended attribute identifier as |expectedType|,
-        * |sink| as |sink|,
-        * `'script'` as |sinkGroup|,
-        * [=context object=]'s [=relevant global object=] as |global|.
-
-        Issue: Remove hardcoding 'script' when new sink groups are specified.
-
-    1. If an exception was thrown, rethrow exception and abort further steps.
- 1. Run the originally specified steps for this construct, using |value| as a new value to set.
-
-Note: If the IDL attribute [=reflect/reflects=] a content attribute, identical steps should be performed when that content attribute is modified by JavaScript code e.g. via `Element.setAttribute()` function.
-
-When the extended attribute appears on an [=operation=] argument, before its operation is invoked, run the following steps:
-
- 1. If [=context object=]'s [=relevant global object=] has a [=Window/trusted type policy factory=]:
-
-    Issue: Update when workers have TT.
-    1. Set |sink| to the result of [=concatenating=] the list &laquo; <a spec=webidl>this</a> IDL value's <a spec=webidl>identifier</a>, [=operation=] identifier. &raquo; with `" "` as |separator|.
-        <div class="example" id="extended-attribute-operation-example">
-        For example, the following annotation and JavaScript code:
-        <pre highlight=idl>
-        partial interface Element {
-          void insertAdjacentHTML(DOMString position, [TrustedTypes=TrustedHTML] HTMLString text);
-        };
-        </pre>
-        <pre highlight=js>
-        document.createElement('a').insertAdjacentHTML('beforebegin', foo);
-        </pre>
-        causes the |sink| value to be `"Element insertAdjacentHTML"`.
-        </div>
-    1. Set the new argument value to the result of running the [$Get Trusted Type compliant string$] algorithm, passing the following arguments:
-        * the argument value as |input|,
-        * {{TrustedTypes}} extended attribute identifier as |expectedType|,
-        * |sink| as |sink|,
-        * `'script'` as |sinkGroup|,
-        * [=context object=]'s [=relevant global object=] as |global|.
-
-        Issue: Remove hardcoding 'script' when new sink types are specified.
-
-    1. If an exception was thrown, rethrow exception and abort further steps.
- 1. Invoke the originally specified steps for the operation.
-
 # Algorithms # {#algorithms}
 
 ## <dfn abstract-op>Create a Trusted Type Policy</dfn> ## {#create-trusted-type-policy-algorithm}
@@ -1033,22 +954,102 @@ Given a {{script}} (|script|), this algorithm performs the following steps:
 # Integrations # {#integrations}
 
 <pre class="idl">
-typedef (DOMString or TrustedHTML) HTMLString;
-typedef (DOMString or TrustedScript) ScriptString;
-typedef (USVString or TrustedScriptURL) ScriptURLString;
+typedef [StringContext=TrustedHTML] DOMString HTMLString;
+typedef [StringContext=TrustedScript] DOMString ScriptString;
+typedef [StringContext=TrustedScriptURL] USVString ScriptURLString;
 typedef (TrustedHTML or TrustedScript or TrustedScriptURL) TrustedType;
-
-typedef (([TreatNullAs=EmptyString] DOMString) or TrustedHTML) HTMLStringDefaultsEmpty;
 </pre>
 
-Note: {{HTMLStringDefaultsEmpty}} is a non-nullable variant that accepts *null* on set.
-Having this separate type allows [[webidl#TreatNullAs]] to attach to DOMString
-per heycam/webidl#441.
+## Integration with WebIDL ## {#webidl-integration}
+
+Issue: Keep in sync with https://github.com/heycam/webidl/pull/841.
+
+### [StringContext] ### {#webidl-string-context-xattr}
+
+This specification defines a new [{{StringContext}}] [=extended attribute=].
+
+If the [{{StringContext}}] [=extended attribute=] appears on {{DOMString}} or {{USVString}}, it
+modifies how the value is converted to the IDL type, causing additional value validation to
+adhere to the context the string is used in.
 
-Issue(w3c/webappsec-trusted-types#2): [[webidl#TreatNullAs|TreatNullAs=EmptyString]] is confusing.
-See note "It should not be used in specifications unless ...".
-For some sinks a `null` value will result in "", and "null" for others.
-This already caused problems in the polyfill.
+The [{{StringContext}}] extended attribute must [=takes an identifier|take an identifier=]. The [=identifier=]
+must be one of {{TrustedHTML}}, {{TrustedScript}} and {{TrustedScriptURL}}.
+
+Issue: Make sure this is OK, otherwise use strings and convert them to TrustedXYZ in this spec only.
+
+[{{StringContext}}] extended attribute may only annotate a type of a [=regular attribute=] or
+a [=regular operation=] argument. A type annotated with the [{{StringContext}}]
+extended attribute must not appear in a [=read only=] attribute. The [=regular attribute=] or
+a [=regular operation=] argument that the type annotated with the [{{StringContext}}] extended
+attribute appears in is its <dfn>related construct</dfn>.
+
+A type that is not {{DOMString}} or {{USVString}} must not be [=extended attributes associated with|associated with=]
+the [{{StringContext}}] extended attribute.
+
+See the rules for converting ECMAScript values to the IDL types in [[webidl#es-DOMString]]
+for the specific requirements that the use of [{{StringContext}}] entails.
+
+<div class="example" id="webidl-stringcontext-example">
+
+    In the following [=IDL fragment=],
+    a [=variadic=] [=operation=] is declared
+    that uses the [{{StringContext}}] [=extended attribute=]
+    on all its arguments:
+
+    <pre highlight="webidl">
+        interface Document {
+          void write([StringContext=html] DOMString... text);
+        };
+    </pre>
+</div>
+
+### Extended attributes applicable to types ### {#webidl-applicable-to-types}
+
+The following extended attributes are <dfn for="extended attributes">applicable to types</dfn>:
+ [{{AllowShared}}],
+ [{{Clamp}}],
+ [{{EnforceRange}}]<ins>,
+ [{{StringContext}}]</ins> and
+ [{{TreatNullAs}}].
+
+### Type conversion ### {#webidl-type-conversion}
+
+This specification modifies the algorithm implementing the conversion to DOMString in [[webidl#es-DOMString]]:
+
+An ECMAScript value |V| is [=converted to an IDL value|converted=]
+to an IDL {{DOMString}} value by running the following algorithm:
+
+  1.  <ins>If the conversion is to an IDL type [=extended attribute associated with|associated with=] the
+      [{{StringContext}}] extended attribute, then set |V| to the result of [=validate the string in context=], passing
+      [=this=], |V|, the {{StringContext}} extended attribute [=identifier=], and the [=identifier=]
+      of the [{{StringContext}}] extended attribute [=related construct=].
+
+      Note: That algorithm may [=ECMAScript/throw=] a {{ECMAScript/TypeError}}.
+      </ins>
+  1.  If |V| is <emu-val>null</emu-val> and the conversion is to an IDL type
+      [=extended attribute associated with|associated with=] the [{{TreatNullAs}}] extended
+      attribute, then return the {{DOMString}} value that represents the empty string.
+  1.  Let |x| be <a abstract-op>ToString</a>(|V|).
+  1.  Return the IDL {{DOMString}} value that represents the same sequence of code units as the one the ECMAScript String value |x| represents.
+
+### Validate the string in context ### {#webidl-validate-the-string-in-context}
+
+This specification adds a following section to [[webidl#es-security]].
+
+Certain algorithms in [[webidl#es-type-mapping]] are defined to
+<dfn id="dfn-validate-the-string-in-context" export>validate the string in context</dfn> on a given
+value. This check is used to determine whether a given value
+is appropriate for its {{StringContext}}. This validation takes the following four inputs:
+
+1.  the [=platform object=] on
+    which the operation invocation or attribute access is being done,
+1.  the value to validate,
+1.  the {{StringContext}} [=identifier=], and
+1.  the [=identifier=] of the operation or attribute.
+
+The algorithm returns an ECMAScript String value, or [=ECMAScript/throws=] a {{ECMAScript/TypeError}}.
+
+Note: The HTML Standard defines how the validation is performed. [[!HTML]]
 
 ## Integration with HTML ## {#integration-with-html}
 
@@ -1081,8 +1082,8 @@ This document modifies the {{Document}} interface defined by [[HTML5|HTML]]:
 
 <pre class="idl">
 partial interface mixin Document {
-  [CEReactions] void write([TrustedTypes=TrustedHTML] HTMLString... text);
-  [CEReactions] void writeln([TrustedTypes=TrustedHTML] HTMLString... text);
+  [CEReactions] void write(HTMLString... text);
+  [CEReactions] void writeln(HTMLString... text);
 };
 </pre>
 
@@ -1090,23 +1091,25 @@ partial interface mixin Document {
 
 #### Slots with trusted values
 
+Issue: Figure out if we can drop {{script/[[ScriptURL]]}} slot after IDL + DOM changes.
+
 This document modifies {{script}} elements. Each script has:
 
 : <dfn dfn-for="script">`[[ScriptURL]]`</dfn> internal slot.
 ::  A string, containing the URL to execute the script from
-    that was set through a {{TrustedTypes}} compliant sink. Equivalent to
+    that was set through a {{StringContext}} compliant sink. Equivalent to
     {{HTMLScriptElement/src}} attribute value. Initially null.
 
 : <dfn dfn-for="script">`[[ScriptText]]`</dfn> internal slot.
 ::  A string, containing the body of the script to execute that was set
-    through a {{TrustedTypes}} compliant sink. Equivalent to script's
+    through a {{StringContext}} compliant sink. Equivalent to script's
     [=child text content=]. Initially null.
 
 #### Setting slot values
 
 This document modifies how {{HTMLScriptElement}} [=child text content=] can be set to allow applications to control dynamically created scripts. It does so by
 adding the {{HTMLElement/innerText}} and {{Node/textContent}} attributes directly on {{HTMLScriptElement}}. The behavior of the attributes remains the same
-as in their original counterparts, apart from additional behavior triggered by the {{TrustedTypes}} extended attribute presence.
+as in their original counterparts, apart from additional behavior triggered by the {{StringContext}} extended attribute presence.
 
 Note: Using these IDL attributes is the recommended way of dynamically setting URL or a text of a script. Manipulating attribute nodes or text nodes directly will call a default policy on the final value when the script is prepared.
 
@@ -1114,10 +1117,10 @@ Issue: Figure out what to do with script.setAttribute('src'). See [DOM#789](http
 
 <pre class="idl">
 partial interface mixin HTMLScriptElement : HTMLElement {
- [CEReactions, TrustedTypes=TrustedScript] attribute [TreatNullAs=EmptyString] ScriptString innerText;
- [CEReactions, TrustedTypes=TrustedScript] attribute ScriptString? textContent;
- [CEReactions, TrustedTypes=TrustedScriptURL] attribute ScriptURLString src;
- [CEReactions, TrustedTypes=TrustedScript] attribute ScriptString text;
+ [CEReactions] attribute [TreatNullAs=EmptyString] ScriptString innerText;
+ [CEReactions] attribute ScriptString? textContent;
+ [CEReactions] attribute ScriptURLString src;
+ [CEReactions] attribute ScriptString text;
 };
 </pre>
 
@@ -1428,16 +1431,16 @@ This document modifies following IDL attributes of various DOM elements:
 
 <pre class="idl">
 partial interface mixin HTMLIFrameElement : HTMLElement {
-  [CEReactions, TrustedTypes=TrustedHTML] attribute HTMLString srcdoc;
+  [CEReactions] attribute HTMLString srcdoc;
 };
 
 partial interface HTMLEmbedElement : HTMLElement {
-  [CEReactions, TrustedTypes=TrustedScriptURL] attribute ScriptURLString src;
+  [CEReactions] attribute ScriptURLString src;
 };
 
 partial interface HTMLObjectElement : HTMLElement {
-  [CEReactions, TrustedTypes=TrustedScriptURL] attribute ScriptURLString data;
-  [CEReactions, TrustedTypes=TrustedScriptURL] attribute DOMString codeBase; // obsolete
+  [CEReactions] attribute ScriptURLString data;
+  [CEReactions] attribute ScriptURLString codeBase; // obsolete
 };
 </pre>
 
@@ -1504,6 +1507,43 @@ Note: This also applies to events in [[SVG2#EventAttributes]].
   </pre>
 </div>
 
+### Validate the string in context ### {#html-validate-the-string-in-context}
+
+This specification defines the <a>validate the string in context</a> algorithm in [[html#integration-with-idl]].
+
+When <a>validate the string in context</a> is invoked, with |platformObject|, |value|, |stringContext|, and |identifier| run these steps:
+
+ 1. If [=platformObject=]'s [=relevant global object=] has a [=Window/trusted type policy factory=]:
+
+    Issue: Update when workers have TT.
+
+    1. Set |sink| to the result of [=concatenating=] the list &laquo; |platformObject|'s <a spec=webidl>identifier</a>, |identifier| &raquo; with `" "` as |separator|.
+        <div class="example" id="validate-string-example">
+        For example, the following annotation and JavaScript code:
+        <pre highlight=idl>
+        typedef [StringContext=TrustedHTML] DOMString HTMLString;
+        [ Exposed=Window, HTMLConstructor] interface HTMLIFrameElement : HTMLElement {
+            attribute HTMLString srcdoc;
+        };
+        </pre>
+        <pre highlight=js>
+        document.createElement('iframe').srcdoc = foo;
+        document.createElement('iframe').setAttribute('SRCdoc', foo);
+        </pre>
+        causes the |sink| value to be `"HTMLIFrameElement srcdoc"`.
+        </div>
+    1. Set |value| to the result of running the [$Get Trusted Type compliant string$] algorithm, passing the following arguments:
+        * |value| as |input|,
+        * |stringContext| as |expectedType|,
+        * |sink| as |sink|,
+        * `'script'` as |sinkGroup|,
+        * |platformObject|'s [=relevant global object=] as |global|.
+
+        Issue: Remove hardcoding 'script' when new sink groups are specified.
+
+    1. If an exception was thrown, rethrow exception and abort further steps.
+ 1. Return |value|.
+
 ## Integration with SVG ## {#integration-with-svg}
 
 This document modifies the {{SVGScriptElement}} interface to enforce Trusted Types:
@@ -1511,7 +1551,7 @@ This document modifies the {{SVGScriptElement}} interface to enforce Trusted Typ
 <pre class="idl">
 partial interface mixin SVGScriptElement : SVGElement {
  // overwrites the definition in SVGURIReference.
- [TrustedTypes=TrustedScriptURL] readonly attribute ScriptURLString href;
+ readonly attribute ScriptURLString href;
 };
 </pre>
 
@@ -1562,21 +1602,21 @@ This document modifies the following interfaces defined by [[DOM-Parsing]]:
 
 <pre class="idl">
 partial interface Element {
-  [CEReactions, TrustedTypes=TrustedHTML] attribute HTMLStringDefaultsEmpty outerHTML;
-  [CEReactions] void insertAdjacentHTML(DOMString position, [TrustedTypes=TrustedHTML] HTMLString text);
+  [CEReactions, TreatNullAs=EmptyString] attribute HTMLString outerHTML;
+  [CEReactions] void insertAdjacentHTML(DOMString position, HTMLString text);
 };
 
 partial interface mixin InnerHTML { // specified in a draft version at https://w3c.github.io/DOM-Parsing/#the-innerhtml-mixin
-  [CEReactions, TrustedTypes=TrustedHTML] attribute HTMLStringDefaultsEmpty innerHTML;
+  [CEReactions, TreatNullAs=EmptyString] attribute HTMLString innerHTML;
 };
 
 partial interface Range {
-  [CEReactions, NewObject] DocumentFragment createContextualFragment([TrustedTypes=TrustedHTML] HTMLString fragment);
+  [CEReactions, NewObject] DocumentFragment createContextualFragment(HTMLString fragment);
 };
 
 [Constructor, Exposed=Window]
 interface DOMParser {
-  [NewObject] Document parseFromString([TrustedTypes=TrustedHTML] HTMLString str, SupportedType type);
+  [NewObject] Document parseFromString(HTMLString str, SupportedType type);
 };
 </pre>