Its some REXX DD that has to be allocated before you can run in TSO.

Joe

On Thu, Jun 4, 2020 at 7:25 AM Seymour J Metz <sme...@gmu.edu> wrote:

> Idle speculation: it's the file name of s bit map meant to go into the
> manual and the text was supposed to say SYSPROC.
>
>
> --
> Shmuel (Seymour J.) Metz
> http://mason.gmu.edu/~smetz3
>
> ________________________________________
> From: IBM Mainframe Discussion List [IBM-MAIN@LISTSERV.UA.EDU] on behalf
> of Charles Mills [charl...@mcn.org]
> Sent: Wednesday, June 3, 2020 6:36 PM
> To: IBM-MAIN@LISTSERV.UA.EDU
> Subject: Re: What is GRXBIMG
>
> 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://secure-web.cisco.com/1msRUVNTCVPM6al9HyShyRDCsU6ONoAtBXbZbF7GJI59Gj89EEVWxcw_sygtcmoro-Imjk1U0ivgPs56TezTZL7Ba2WK1xNb6Yt-8QhSSHtfKcjpi4120Lk2HeTC2GP_IBVSjpDZ2aER63S8t_e86YAeMWGEkxm-0kO-Skka5_F7n-9WQmSxHedXSSqNjPMCsTlIWQCC56yaSIKzebhds42QUBcHC9zlx-UMb5yTFa2oIWvz0WrXbUGm2BF2bLLjlEhdCanddWLM-oXiVALYstYbU2hWeGN7BMRxMcJFPaMNmBxidchg_eoJCTNNqeCY_q74Di2uFtY4YQx2Y89PNJ8tAou1-jxWUZ1teZbByjfqzH8hUIH2VQUbpBvenpMTw1T4CneetfQe7qvCqp5o2OSE52nYpPrr4XGXLb1VNGnwTSrzLKz3fW4A6bNBpdw-r/http%3A%2F%2Fwww.bitsavers.org%2Fpdf%2Fibm%2F370%2FTSO_Extensions%2FSC28-1883-4_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
>
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