z/OS ISPF Reference Summary
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LINENUM—query the line number of a labeled line

z/OS ISPF Reference Summary
SC19-3624-00

Assignment statement syntax

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>>-ISREDIT--(varname)--=--LINENUM--label-----------------------><

Return codes

 0
Normal completion.
 4
Line 0 specified.
 8
Label specified, but not found (variable set to 0).
12
Invalid line number.
20
Severe error.

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