This is an example of a super simple Pen project. If you look inside, you'll see three synchronized forever loops in the "Loop" broadcast handlers: Sprite1 and Sprite2 bounces randomly across the stage. The Pen sprite continuously change pen color slightly and draws a line between Sprite1 and Sprite2, then stamps with a large black costume with the ghost graphics effect set to 95, to gradually erase the previous lines. All code by me (@kriblo).
