Field record relation indicators are specified in positions 67 and 68 of the input specifications. The valid field record relation indicators are:
Field record relation indicators cannot be specified for externally described files.
You use field record relation indicators to associate fields with a particular record type when that record type is one of several in an OR relationship. The field described on the specification line is available for input only if the indicator specified in the field record relation entry is on or if the entry is blank. If the entry is blank, the field is common to all record types defined by the OR relationship.