CompuServe Messages

Neil, I worked on GEM and have skimmed over the Mac and Amiga manuals now. Let's say there is a "very rough functional equivalence" amongst them. As you say, if you use plain vanilla interface techniques you can probably port reasonably well if you've kept the modularity sane. If you are heavily exploiting the local environment, well, things get a little shaky. (If you ever seriously get into organizing detente between the Atari/Amiga/Mac development worlds, I'd be willing to put in my two cents worth – it's a worthwhile goal!)