Aggregate_Reference

 An aggregate reference resolves into a reference to a structured
 data item (a record structure or substructure).  For example:

 Data Declarations:

    STRUCTURE /STRA/
        INTEGER  INTFLD, INTFLDARY (10)
    END STRUCTURE
      . . .
    STRUCTURE /STRB/
        CHARACTER*20  CHARFLD
        INTEGER  INTFLD, INTFLDARY (10)
        STRUCTURE STRUCFLD
            COMPLEX  CPXFLD, CPXFLDARY (10)
        END STRUCTURE
        RECORD  /STRA/  RECFLD, RECFLDARY (10)
    END STRUCTURE
      . . .
    RECORD  /STRB/  REC, RECARY (10)

 Reference Examples:

    REC --- A record name
    RECARY(1) --- A record array reference
    REC.RECFLD --- A reference to a substructure
    REC.RECFLDARY(1) --- A reference to a substructure array element
    RECARY(1).RECFLD --- A reference to a substructure in a record
      array element
    RECARY(1).RECFLDARY(1) --- A reference to a substructure array
      element in a record array