Sequential-within-limits processing by a record-address file is specified by an L in position 28 of the file description specifications and is valid for a file with a keyed access.
You can specify sequential-within-limits processing for an input or an update file that is designated as a primary, secondary, or full-procedural file. The file can be externally described or program-described (indexed). The file should have keys in ascending sequence.
To process a file sequentially within limits from a record-address file, the program reads:
The program repeats this procedure until the end of the record-address file is reached.