A more interesting question might be "what happens if I do allocate it?" and at least for a simple test with ALLOC FI(GRXBIMG) DA(*) the answer seems to be "nothing special."
What might this be a relic of? GRX does not seem to be a component prefix. I could be wrong. Here's my theory: a developer whose initials were GR added some sort of debug output: GRXBIMG = George Rothwell's Extended Byte Image or something like that. It somehow made it into the product documentation. Astounding that it has hidden there in plain sight for over twenty years. I do not see the reference in the 1991 MVS/REXX Reference: http://www.bitsavers.org/pdf/ibm/370/TSO_Extensions/SC28-1883-4_TSO_Extensions_Version_2_Procedures_Langage_MVS_REXX_Reference_Aug1991.pdf Charles -----Original Message----- From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf Of Paul Gilmartin Sent: Wednesday, June 3, 2020 9:16 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: What is GRXBIMG On Wed, 3 Jun 2020 07:00:19 -0700, Charles Mills wrote: >I must have time on my hands. I just dragged out the OS/390 V2R8 CDs from >1999, and the sentence is there verbatim. > >It's the only hit on GRXBIMG on CD #1. > >-----Original Message----- >From: Steve Smith >Sent: Wednesday, June 3, 2020 6:37 AM > >It's still there in V2R4... and I am appalled that I've been running REXX >incorrectly for decades now. > I submitted a (slightly snarky) RCF on this: Hello, MHVRCFs, In: https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.ikja300/tsorun.htm • /OS 2.2.0 • z/OS TSO/E • z/OS TSO/E REXX Reference • Using REXX in different address spaces I read: "... you must have ddname GRXBIMG allocated." I'm curious. Does: //GRXBIMG DD DUMMY suffice, or must it be a PDS(E)? What error is reported if the programmer fails to allocate GRXBIMG? Is this covered in M&C? Thanks, gil ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
