Psion Series 5 FAQ 1.2 · The last official release of the Series 5 FAQ for the comp.sys.psion.* Usenet hierarchy... (Jul-1998 · Psion)
Psion Series 5 FAQ 2.0 · Version 2.0 of the Series 5 FAQ was developed at the end of 1999 but didn't quite manage to escape into the wild... (Dec-1999 · Psion)
MC400 · The Psion MC400 was a ground breaking machine at the time of its release in 1990, and even today it has some features that cannot be matched by any current machine... (Psion)
MC400 Battery Check · A simple program to count the number of minutes that the MC400 has been running on a set of batteries... (Psion)