On Tue, 28 Feb 2017 10:19:49 -0600, Paul Gilmartin wrote:

>Ah!  That shows that (at least at one time) it was possible to increase
>the length of the PARM without introducing intolerable incompatibilities.

Perhaps because the potential integrity issues were  not understood at the time.

>Where's the PROC statement described?  I find it neither in the ToC nor
>in the Index although there are numerous mentions of "catalogued"
>proc[edures].  (PROCs aren't catalogued; procedure libraries are.)

In-stream procedures were introduced in release 19. See the 1970 manual.

>I'm curious because others have said (in this forum?) that earliest PROCs
>had no arguments; all modification was done by overrides.  So, at that
>time symbols didn't exist in JCL, neither as PROC formal parameters nor
>in the (relatively recent) SET statment.

That agrees with the description of Cataloged procedures in the 1967 manual.

-- 
Tom Marchant

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