wdc@ATHENA.MIT.EDU (Bill Cattey) (04/11/90)
I (and many others, no doubt) have had the frustrating experience of trying to do close work with zip and having it seem to ignore or mis-do the commands I specify. I thought this was because of some terrible bug deep inside the system that was causing mouse motion to be mis-processed. It turns out that it's a preference that is set to a very different default than my expectation: ZipCreateTolerance The default is 10. This means that if I try to continue a polygon within 10 pixels of the previous point, I can't. I have just tested the preference: *.ZipCreateTolerance: 0 in global.prf, and zip is MUCH nicer to me. Even tickling arcs is easier. I strongly recomment that further testing be done, with an eye to making zero the default value. -wdc