hi michael

See attached pdf for more explanation of different line styles needed. At the end of the day if you can export everything except the red dotted lines (hidden lines) and then a simple line style to differentiate the others that would be great. I tried recently export a chain done using the brilliant chain script and the silhouette command. I then exported to illustrator but it was just too cumbersome to clean up. This work would go a long way to making this process a lot more painless.

hope my sketch clarifies things

Another thing on this subject, when exporting to eps, is it possible for any circles/ellipses to have just 4 points at the major and minor axes. This would clear up a lot of points and make editing/construction easier. See bottom sketch in pdf. I suspect that this bit maybe why Isodraw can charge such a high price as we are moving from 3D objects to postscript language which is moving out of your field . .

Matt