I believe that he is referring to the command CALL in the TSO environment.

address tso
'call' '...'

________________________________________
From: IBM Mainframe Discussion List <IBM-MAIN@LISTSERV.UA.EDU> on behalf of 
Paul Gilmartin <0000042bfe9c879d-dmarc-requ...@listserv.ua.edu>
Sent: Tuesday, August 15, 2023 3:24 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: How can a REXX data stack pass information from a program?

On Tue, 15 Aug 2023 19:08:07 +0000, Schmitt, Michael wrote:

>I believe that the TSO CALL is passing a string that is a copy of the 
>variable(s) used to build it.
>
Can you omit the "TSO"?


>COBOL won't give  e access to R1. But even so, as mentioned above, I don't 
>think that would help.
>
With contrafactuals anything can be asserted.


>POSIX pipes are not available.
>
In what universe is BPX1PIP not available?

--
gil

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