I am rediscovering computing of the times passed... when I visited university, I used an Atari Portfolio (still a fan!), while some friends of mine used PSION series 3 handhelds with similar success. Now, decades later, my interest in the PSION devices is triggered. Not sure about OPL, however, having some native prog-lang aboard seems a good thing. Mind you the PoFo can run a lot of DOS based languages, such as Turbo Pascal 3.