I-O-CONTROL paragraph

Function

The I-O-CONTROL paragraph defines the events which, if they occur, cause restart points to be established. It may also specify a memory area that is to be shared by different files. In addition, it defines special input/output conditions and, in the case of sequentially organized files, also the location of multiple file tapes.

Format 1 for sequential file organization

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I-O-CONTROL.

    [MULTIPLE FILE TAPE clause]...
    [RERUN clause]...
    [SAME AREA clause]...

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Format 2 for relative and indexed file organization

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I-O-CONTROL.

     [RERUN clause]...
     [SAME AREA clause]...

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Syntax rule

1. Within a class definition, an I-O-CONTROL may only be specified in a method definition.