-> that bouncing ball program, using a very shrunken window as -> the ball, and repositioning the whole window through time. -> Remember that one? Almost the Xy version of Pong. That's a new one on me. Can you dig it up? I'd like to see it.I've attached it as bounce.pgm.The speed is an issue: I've got it at a peppy speed for my machine, but have allowed the user to set a speed (default delay = 40). You'll be prompted for it. I don't know how to have XPL test for whether a key has been struck w/o interrupting program execution (as does Constat in BASIC), so the program runs until you hit ctrl-esc.Enjoy. HarryAttachment: Bounce.pgm
Description: Binary dataHarry Binswanger hb@xxxxxxxx