Parentheses: You can omit the parentheses if you
code: - Only one keyword subparameter.
- Only a data set name, dsname, without any subparameters.
- Only a backward reference without any subparameters. A backward
reference is a reference to an earlier DD statement in the job or
in a cataloged or in-stream procedure called by a job step. A backward
reference is in the form *.ddname or *.stepname.ddname or *.stepname.procstepname.ddname.
For example, DCB=RECFM=FB or DCB=WKDATA or DCB=*.STEP3.DD2
Multiple subparameters: When the parameter contains more
than one subparameter, separate the subparameters by commas and enclose
the subparameter list in parentheses. For example, DCB=(RECFM=FB,LRECL=133,BLKSIZE=399)
or DCB=(*.DD1,BUFNO=4)
Continuation onto another statement: Enclose the subparameter list in only one set of parentheses.
End each statement with a comma after a complete subparameter. For
example: //INPUT DD DSNAME=WKDATA,DCB=(RECFM=FB,LRECL=80,BLKSIZE=800,
// BUFL=800,BUFNO=4)
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