Oh man, that brings back some memories. Check out Figure 3 on page 25 of the
1970 manual!
Interesting -- the example of a possible PARM= value ('P1,123,MT5') has not
changed between that manual and
https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.ieab600/iea3b6_Syntax89.htm
Ditto for the first three examples on
https://www.ibm.com/support/knowledgecenter/SSLTBW_2.2.0/com.ibm.zos.v2r2.ieab600/iea3b6_Examples_of_the_PARM_parameter.htm
*Accounting* information is limited to 142 characters -- perhaps that is what
@Clark is recalling.
Charles
-----Original Message-----
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of Tom Marchant
Sent: Tuesday, February 28, 2017 4:34 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: Question about PARMDD
On Mon, 27 Feb 2017 22:20:07 -0400, Clark Morris wrote:
>When did it change to 100?
Some time between 1967 and 1970.
See page 85 of
http://bitsavers.trailing-edge.com/pdf/ibm/360/os/R19_Jun70/GC28-6704-0_JCL_Reference_Rel_19_Jun70.pdf
for OS/360, dated June, 1970
<quote>
PARM=value
value
consists of up to 100 characters of information or options that the system is
to pass to the processing program.
</quote>
See also page 18 of the fifth edition of the OS/360 JCL manual, dated March,
1967, where the limit is specified as 40 characters.
http://bitsavers.trailing-edge.com/pdf/ibm/360/os/R01-08/C28-6539-4_OS_JCL_Mar67.pdf
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