On Mar 31, 6:19 pm, "Michael J. Mahon" <mjma...@aol.com> wrote: > 100 HGR2 : HCOLOR= 3 > 110 HPLOT 279*RND(1),191*RND(1) > 120 GOTO 110 That _is_ interesting. It occurs after about 6 seconds of pressing scroll-lock in AppleWin on my machine. Cheers, Nick.