Controlling the process

There are 53 PARM field options which can be coded on the Linkage Editor JCL EXEC statement, but this page discusses just three of them.

//L        EXEC PGM=HEWL,
//             PARM='MAP,LET,LIST,NCAL',
//             COND=(8,LT,C)

MAP	Produces a load module map showing Control Section names, sizes, and location within the load module.

LET	Ordinarily, the binder marks an output program module as non-executable when an error with a severity level of 8 or higher is encountered. This can be overridden by specifying a different severity level using the LET option. If LET is specified without a value, LET(8) is assumed. Trying to execute a program which has been marked non-executable will result in an S106 Abend

NCAL	NCAL or the alternative NOCALL, disable the AUTOCALL feature.