Example: Record format *U

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

Undefined format (variable length) (*U).

Figure 1. Undefined format (variable length) (*U)
This graphic displays Block
1, which is made up of Record A pointing toward Block 2, which is made up
of Record B.

This graphic displays Block
1, which is made up of Record A pointing toward Block 2, which is made up
of Record B.

Undefined records do not have a standard definition, and the contents of Records A and B are defined by the application. The application might define its own descriptors with lengths similar to BDWs.