Print lines are 121 bytes long. The first byte is the ANSI (American National Standards Institute) control character. The minimum LRECL is 121 (U-format records only). If a smaller size is used, it is overridden to 121.

You can alter the defaults by placing other values in the DCB parameter of the SYSPRINT statement. You cannot, however, use a record format of F or fixed block (FB); those are changed to VBA.