Wait_for_Key
Wait_For_Key is a call that pauses the program until a key has been pressed in the RaptorGraph window.
Notes: A graphics window must be open when Wait_For_Key is called or a run-time error will occur. If the RaptorGraph window is not on top, the user may have to click on it once before it will respond to user keystrokes.
Example:
Wait_For_Key