CompuServe Messages

Anyone's PostScript interpreter is as good as they think they can get away with, just like any other commercial product. If MacWorld can find two-three experts who know how to break Adobe PostScript or several clones, then any PostScript clone maker can find them, too. Look at the testing done by compiler vendors – there are test suites to validate your compiler. Not everyone uses them, of course. Testing is often limited and not comprehensive.