This is really weird! It gave me a flashback to my COLLEGE days, when my Physics teacher sent us into the computer lab and told us to write a program. No one knew anything about computers (1975 or 76). We had to read this spiral bound manual and figure out how to write a computer program. I made something like the tracing of a bouncing ball, or something like that. It was a real stitch at the time! This really took me back there! Thanks, krissy (I think!)