Writing user Trailer labels
When SUL is coded on the DD statement and the address of an output user trailer label routine is specified in the DCB exit list, the close routine can write as many as eight user trailer labels (UTL1-UTL8).
When SUL is coded on the DD statement and the address of an output user trailer label routine is specified in the DCB exit list, the close routine can write as many as eight user trailer labels (UTL1-UTL8).