Example: Record format *D

This is an example of record format *D, which consists of a graphic with an explanation.

D-type Code ASCII, deblocks (*D).

Figure 1. Blocks with interblock gap
This diagram displays an
interblock gap pointing toward two separate blocks. Block 1 contains OBP and
a Record A. Block 1 is then pointing toward block 2, which contains OBP and
Record B.

This diagram displays an
interblock gap pointing toward two separate blocks. Block 1 contains OBP and
a Record A. Block 1 is then pointing toward block 2, which contains OBP and
Record B.

OBP is an optional block prefix. The buffer offset (BUFOFSET) parameter, for the tape file, specifies the optional block prefix that can vary in length from 00 to 99. The OBP length must be constant for all blocks in the file. Each record can also contain an optional control character.