Professional Page $%#@
There was a bug in the color separation code in the very first release of
PPage V1.2 It is possible that you received that version. Post your adress,
and I'll check your registration and send you a new disk.
Yes, Professional Page can do custom screens. The screen density can be set
in the Postscript Output selector, as well as the angle of rotation for
the screen. These can be set differently for each separation.