StartStatic (only executable if screen is parented to a display_static)
Starts showing a 5 second long static. Doing "StartStatic (time in seconds)" will make the static appear for the specified time. Doing "StartStatic 0" will show static for infinite time.
StopStatic or ShowFootage (only executable if screen is showing static)
Starts showing the screen footage.
ChangeFootageValue (0 or 1)
Changes the footage. 0 is Wheatley talking, 1 is GLaDOS talking.