On our system, whenever anything logs into an account, a file is executed
that sets local variables.  Look at the LIMIT UDC below:

LIMIT JOB="",SES="",JOBQ=""
OPTION NORECURSION
IF  "!JOBQ" = ""
    IF  BOUND(SYS_JOBQ)=TRUE
        SETVAR LIMIT_JOBQ ";JOBQ=!SYS_JOBQ"
        JOBQSESSIONFILE SES="!SES",JOBQ="!SYS_JOBQ"
    ELSE
        SETVAR LIMIT_JOBQ ""
    ENDIF
ELSEIF  UPS("!JOBQ")="GLOBAL"
    SETVAR LIMIT_JOBQ ""
ELSE
    SETVAR LIMIT_JOBQ ";JOBQ=!JOBQ"
    JOBQSESSIONFILE SES="!SES",JOBQ="!JOBQ"
ENDIF

#ECHO LIMIT !JOB,!SES!LIMIT_JOBQ
LIMIT !JOB,!SES!LIMIT_JOBQ

If the JOBQ is spaces, then it checks to see if a local variable is set for
SYS_JOBQ, the limit command applies to the defined JOBQ.  To access the
GLOBAL JOBQ, use the GLOBAL as the jobq and the master limit it adjusted.

Other documentation if interested.

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