commands.txt

Console commands (client)
bind key command: When key is pressed, execute command.
echo text: Print the arguments to the console
exec file: Execute all the commands in file.
exit: Close the game.
player pnum command: Execute command as player pnum.
quit: Close the game.
showfps: Echo the current framerate.
toggle_fullscreen: Enter or leave full-screen mode.
toggleconsole: Open or close the console.
unbind key: Remove the binding from key.
unbindall: Clear all keyboard bindings

Console commands (server)
addbot x y: Add an AI player at (x,y)
sv_exec file: Execute all the commands in file, as the server.
+brake: Thrust backwards
+left: Turn left
+right: Turn right
+thrust: Thrust forwards
+shooting: Fire
addent
dropent
updateent
updatecamera

Console variables (client)
fullscreen: Whether to use full-screen mode
console_speed: Speed the console moves up and down
console_height: How much of the screen the console fills
show_keys: Whether unbound keys should be echoed in console

Console variables (server)
turn_speed: How fast players turn (rad/s)
thrust_strength: How fast players accelerate (px/s^2)
brake_strength: How fast players accelerate backwards (px/s^2)