Rational Developer for System z
Enterprise COBOL for z/OS, Version 4.1, Programming Guide


Layout of format-U records

With format-U, each block of external storage is handled as a logical record. There are no record-length or block-length fields.

This image shows a line drawing of a physical block and a logical record, which have the same size.

related concepts  
Logical records

related tasks  
Requesting undefined format


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