I realize I told a lie the other day. INFORMATION is actually installed on the rev21 public emulator, and the samples. A few manuals are online. I feel like I've seen one or two more that I can't find just now. I haven't gotten these integrated into sysovl.info yet:
http://yagi.h-net.org/prime_manuals/pdr3905_inform_refgde_1981.pdf http://yagi.h-net.org/prime_manuals/pdr3906_perform_refgde_1980.pdf http://yagi.h-net.org/prime_manuals/prirun_scans/Prime%20Information%20Update%205.3.2%201983.pdf You can think of MIDASPLUS as similar to ISAM. A _lot_ of shops used it. The application I supported really should have been on a real database, as we had cross-file relations, but that was "too slow" and "too expensive", so it was on MIDASPLUS, and we suffered through the inevitable partial updates. MIDASPLUS was preceded by MIDAS, which was preceded by KIDA. KIDA was originally part of the base os. MIDAS stands for "multiple index data access system", iirc. I _think_ the distributed systems management stuff (DSM) may have internally used FORMS, so you might grovel through those bits on the rev23 machine. I saw a few episodes of The Prisoner many years ago, but don't remember the title sequence. De