postcsript wysiwig editor ?

[Cyrill Steiner]

Does anybody knows whether there exists a software which allows to edit
postscript files of evolutinary trees?
There are several programs availiable which generate evolutionary trees
as a postscript output. Most of times they need to be redesigned to get
a publishable output. The trouble is that I have several postscript file
viewers (Photoshop, Ghostview), but you can not edit these files.


Thank you for any suggestions

Cyrill Steiner