Tells the turtle to enter "window" mode. From now on, when the turtle is asked to move past the boundary of the graphics window, it moves off screen. The visible graphics window is considered as just part of an infinite graphics plane; the turtle can be anywhere on the plane. If you lose the turtle, HOME moves it back to the center of the window.
WRAP FORWARD 950 RIGHT 90 WINDOW FORWARD 950 FORWARD 100