A format model is a nonexecutable, read-only data structure that is used by the format model processor service to format a control block (or any data area). By assembling the set of macros, BLSQMDEF, BLSQSHDR, and BLSQMFLD, you can create format models. The format model contains:

• A header, created by the BLSQMDEF macro
• Subheaders, specified by the BLSQSHDR macro
• A list of entries that describe each field, created by the BLSQMFLD macro. Up to 40 BLSQMFLD macros can be specified for each line to be displayed.

See the following:

• Figure 1 for an example of how to create your own model using the BLSQMDEF and BLSQMFLD macros
• z/OS MVS Programming: Assembler Services Reference ABE-HSP for information about the BLSQMDEF, BLSQSHDR, and BLSQMFLD macros