<snippet from Tom Marchant on Mon, 21 Feb 2022 12:12:49 -0500> . Just to be clear, the original implementation of ReXX was for VM . in about 1980, well before OS/2. <end>
Oh yes, I totally agree. What I was attempting to say was that the original implementation published by RexxLA was based upon the implementation I cited in the IBM announcement letter. I still have my (mostly hand written) notes from around 1990 related to the IBM OS/2 1.3 implementation of Rexx. To the best of my knowledge (from looking at Mike Cowlishaw's notes which he donated to RexxLA and which once upon a time resided on IBM Hursley Labs systems), Rexx was initially developed from 1979 through 1982 as an internal IBM tool, and was first released as part of the IBM VM/SP operating system around 1983. I remember working on VM in that timeframe and I was thrilled (really!) that I could use Rexx instead of EXEC and EXEC2. As an IBM employee I had the opportunity to chat with Mike Cowlishaw on several occasions. Not surprisingly, I found him to be a delightful individual and extremely helpful. Bob
