*---------------------------------------------------------------
      *--- DLBL OPERANDS
      *--- // DLBL filename
      *---          file-id
      *---          date
      *---          codes
      *---          DSF
      *---          BLKSIZE
      *---          BUFND
      *---          BUFNI
      *---          BUFSP
      *---          CAT
      *- --         CISZ
      *- --         DISP
      *---          RECORDS
      *---          RECSIZE
      *---------------------------------------------------------------
 
               		Where:
| Operand | Description | |
|---|---|---|
| filename | DD name | |
| file-id | A unique name which identifies a dataset in the system catalog DSNs that start with a $$$ prefix are treated as temporary ones - for example: // DLBL filename, '$$$.xxx.yyyy' | |
| date | Retention period in days (0 to 9999) or Julian date | |
| codes | Parsed but not processed* | VSAM SD or DA | 
| DSF | Parsed but not processed* | A data-secured file | 
| BLKSIZE | Block size | |
| BUFND | Parsed but not processed* | Number of I/O buffers | 
| BUFNI | Parsed but not processed* | Number of index buffers | 
| BUFSP | Parsed but not processed* | Number of bytes allocated for buffer space. | 
| CAT | Parsed but not processed* | Catalog name; single system catalog in MF | 
| CISZ | Parsed but not processed* | Control Interval size | 
| DISP | Disposition opened, after normal step end, after abnormal step end | |
| RECORDS | Parsed but not processed* | Number of records for primary and secondary space allocation | 
| RECSIZE | Average record length |