File description entry

The file description entry (FD entry) represents the highest level of organization in the file section.

The file description entry furnishes information concerning the physical structure, identification, and the internal or external attributes of a file connector, of the associated records, and of the associated data items.

Format.

          FD file-name-1

        [ BLOCK [ CONTAINS ] [ integer-1 TO ] integer-2 [ RECORDS    ]
                                                        [ CHARACTERS ]

        [ RECORD [ CONTAINS ] [ integer-1 TO ] integer-2 [ CHARACTERS ]

        [ LINAGE [ IS ] { data-name-2 } [LINES]
                        { integer-8   }
        	[ [ WITH ] FOOTING [ AT ] { data-name-3 } ]
        	                          { integer-9   }
        	[ [ LINES AT ] TOP { data-name-4 } ]
        	                   { integer-10  }
        	[ [ LINES AT ] BOTTOM  { data-name-5 } ] ]
        	                       { integer-11  }