The next example illustrates the use of PARM, including an instance when more than one parameter (in this case, SESSIONS) is specified in PARM:
//REST EXEC PGM=ARCMAIN,PARM='SESSIONS=80 SESSIONS=40 VERBOSE'
In the example, 40 sessions are used, not 80, because SESSIONS=40 is the last instance of the parameter specified in PARM.