On Thursday, May 12, 2011 7:11:23 AM UTC-7, Steve Nickolas wrote: > 10 ? PDL(0),PDL(1):GOTO 10 ...or, if you want it to run right away: FOR I=0 TO 1 STEP 0:? PDL(0),PDL(1):NEXT > I want to say PDL(0) is the X-axis and PDL(1) is the Y-axis. Yes. Scott Alfter scott@alfter.us