I spent a log of time customizing ZCPR 2.2, but never got around to moving to ZCPR3. Can anyone give a thumbnail sketch of the differences, keeping in mind that I'm fairly familiar with the 2.2 version? In addition to tweaking & adding stuff to ZCPR2.2, I also adapted someone else's take on implementing resident system extensions (RSXs) under CP/M 2.2/ZCPR, as well as putting together a small library of RSXs that would work with it (as well as CP/M 3). Any interest in that stuff? I think the floppies may still be readable... -dq