Hi danperk,

> Usually not, maybe on a rare occasion where they help describe a curved surface for reference.
>
> I just didn't want say eliminate them in case others have a need for them.

I think that I'll probably start with just eliminating them (seam edges on closed smooth surfaces), and then if anyone ends up needing them I'll look into adding an option later.


> BTW- Starting with Illustrator CS5 you can use the Line Width Tool to control width and taper.
> Also Astute Graphics WidthScribe plug-in can be very handy for people who want to do finessing
> of line widths in Illustrator.

Unfortunately the information controlling that is likely to be private just to illustrator - Illustrator has become rather closed with its internal file format structure over the years, the only documented AI version is from AI v8 .

I don't think that PDF has a method for tapered line widths, so probably when generating a PDF file Illustrator converts tapered strokes into a closed and filled outline path rather than something that actually has a line stroke on it in the PDF.

- Michael