Neither "Unformatted System Services" nor "Unix System Services" has or should have the word "screen". USS in VTAM determines the appropriate logmode for an unformatted logon. USS for TN3270 includes equivalent functionality; Unix System Services is what used to be MVS Open Edition in 1993, two decades after VTAM and USS. If there is an unformatted screen services it'sa not part of either VTAM or Unix.
Of course, TN3270 includes the logon screen and Unix System Services includes 3270 support, but "screen" is still not part of the names, and never has been. The last I heard from IBM, USS was an official abbreviation for only Unformatted System Services. -- Shmuel (Seymour J.) Metz http://mason.gmu.edu/~smetz3 ________________________________________ From: IBM Mainframe Discussion List [[email protected]] on behalf of Matt Hogstrom [[email protected]] Sent: Sunday, November 14, 2021 1:29 AM To: [email protected] Subject: Re: Words fail me! Unformatted System Services was used in VTAM to specify the screen and responses to uses to logon to formal VTAM sessions like TSO and CICS. USS was Unix System Services IIRC Matt Hogstrom PGP key 0F143BC1 > On Nov 13, 2021, at 21:02, [email protected] wrote: > > Way back when (long before UNIX was added to MVS) the network sysprog told > me that USS stood for Unformatted Screen Services. > > Years after that but years (decades?) ago, I noticed that some VTAM books > were talking about UNIX System Services in a context completely unrelated to > UNIX. > > I sent feedback that this was not the correct expansion of USS in this > context. I expect others also did. References to UNIX were soon removed. > > But I wonder if that is why VTAM books talk about Unformatted System Services > now - because they changed UNIX to Unformatted, but not System to Screen. > > Cheers, > Greg > > ---------------------------------------------------------------------- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to [email protected] with the message: INFO IBM-MAIN
