🚀 go-pugleaf

> I'm not sure why anyone would want to overprint white?? 

It's often necessary in silkscreen projects, resin printers, etc. And is
useful in transparency effects. AI 10 gives a warning if I give
something a white fill and then try to set it to overprint. But if the
object is first given a colored fill which is set to overprint, and
later is changed to white, the warning does not appear.

It used to be a problem in FH, too., especially whenever black text
(which overprints by default) was converted to paths and then later
changed to white. The overprint attribute was still there, but
invisible. Finally, they made it so that a white color simply could not
be set to overprint unless it is a spot color. That solved the
accidental occurrences for me, but I haven't really thought through how
that treatment might conflict with AI's transparency features. For
example, if they simply disallowed it in a white process color, they'd
probably have to re-work parts of the transparency effects interfaces,
wouldn't they?

So maybe Mark's suggestion of a pref to disallow it might be the best
solution for the one creating a file. But how would that affect files
which use overprinting white intentionally and are being opened and
printed by someone else?

JET