With the IBM-supplied default, 4096 bytes of data are written for each BLL cell in active programs and no data for BLL cells in programs that are not active.

The COBOL runtime environment behavior can be modified to change how much data from each BLL is written to the CEEDUMP. The DUMPBLL parameter allows two suboption keywords, ACTIVE and INACTIVE, to specify the length of data from the BLL to be dumped for active and non-active programs respectively. Each suboption must be associated with a length value. The suboption keywords must be spelled out completely. If the suboption is specified, a length value must be specified. The length value must be between 0 and 4096. If the value specified is greater than 0, it must be a multiple of 32.

If a suboption is skipped entirely, the default value is used for that suboption. A partially specified suboption or a suboption with a keyword or length omitted is diagnosed as an error during the IGZRREOP macro processing. This causes a nonzero return code.