Eric wrote: > There was IBM APL\1130 version 2, introduced in 1969. It's actually sorta annoying when you discover how much HP copied from IBM in those days. The first giveaway is that APL\3000 has a backslash in the product name when everything else was a forward slash as in BASIC/3000, FORTRAN/3000, and even RPG/3000 (which was another functional copy of an IBM product), and of course this is likely because of APL\360. Most people, even inside HP, started calling it APL/3000 almost immediately though.
APL\3000 is supposed to be a functional superset of IBM APL SV (APL\360 with Shared Variables etc.) and HP advertised it as such. The other one that took me a while to notice is the HP 2641A APL Display Station that came out after the 2640 and 2645. That out-of-order numbering was kind of interesting until you discover that the IBM Selectric-based printing terminal with the APL type ball was the IBM 2741 (sigh).
