SYSIN requirements
The SYSIN data is normally supplied from the select panel; it is
the input parameter to the batch program. The definition of the input
parameters is:
8Y (INSERT NEW, REPLACE OLD, OPERATOR INSTRUCTIONS)
8N (INSERT NEW ONLY)
The EQQOPIN DD will reference the name of the selected sequential file. For a description of the contents of this file, see Layout of the operator instruction data set.