Jeffrey Sharp wrote: [ ... ] Now *that* brings back memories. My first "real" programming job in the late 1970's was writing code in Coral and assembler for Honeywell Level 6 systems running GCOS MOD 400. The choice of Coral was probably a mistake - it was driven by a group of programmers who had recently arrived from Plessey and who wanted something higher level than assembler that wasn't COBOL. Unfortunately, Honeywell's Coral compiler had been provided as a checklist item so that Honeywell could bid on UK government contracts (at a time when it was mandatory to have support for Coral) and, consequently, it just wasn't expected that anyone would actually *use* it. GCOS MOD 400 was also quite a nice system to use and, when I later started to use UNIX it was interesting to see the similarities (and the differences) apart from the obvious common antecedent of Multics, I believe that Honewell had also borrowed a few ideas from UNIX as it had evolved during the 1970's - I seem to recall (possibly wrongly) that the MOD 400 editor was very similar to the UNIX "ed". Anyone else ever use a Level 6?