Example 2: SHOWCB macro (display an exit list address)

In this example, a SHOWCB macro is used to get the address of an exit list by displaying the address in an access method control block that uses the exit list.

        SHOWCB ACB=address,                                            x
               AREA=address,                                           x
               FIELDS=EXLST,                                           x
               LENGTH=4

The SHOWCB macro's parameters are:

ACB specifies the address of an access method control block from which the address of an exit list is displayed.
AREA and LENGTH specify an area and length, 4 bytes, used to display the address of the exit list.
FIELDS specifies the EXLST field in an access method control block is displayed.

Important: If you issue a SHOWCB for a non-VSAM and non-VTAM ACB, the results will be unpredictable.