PSION II OPL
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This old version of the Organiser Programming Language [1] (it was
renamed to the "Open" much later) is simpler and more limited than its
later versions. Th has to e because the Organiser II [2] is of course
more limited than any later PSION machine.
I have written a few very short programs yesterday. So far all works as
expected. I have been using the Organiser II LZ64 (the latest and
greatest model) with a RAM-type storage pack. So it is relatively fast.
It seems to be more practical for simple programming than my Palm III
because of the build-in programming language and the hardware keyboard.
Now I should manage that Comms Link to be able to backup the programs..
References:
[1] https://en.wikipedia.org/wiki/Open_Programming_Language
[2] https://en.wikipedia.org/wiki/Psion_Organiser