XCAL: Exclusive call option

You use the XCAL option when valid exclusive references have been made between segments of an overlay program. A warning message is issued for each valid exclusive reference, but the binder marks the output module as executable.

See References between segments for information about valid exclusive references.

To specify the exclusive call option, code XCAL in the PARM field.

{XCAL | XCAL=NO | NOXCAL}

The OVLY attribute must also be specified when you use the XCAL option. For example:
//LKED       EXEC   PGM=IEWBLINK,PARM='XCAL,OVLY,...'

XCAL=NO is the default value and can also be specified with the keyword NOXCAL.