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COBOL, DATA_DIVISION, clauses, VALUE_OF_ID
 *Conan The Librarian 

  The VALUE OF ID clause specifies, replaces, or completes a file
  specification.

  Format -

   VALUE OF { ID      } IS { file-name }
            { FILE-ID }    { data-name }

  1 - file-name 

  is a nonnumeric literal.  It contains the full or partial file
  specification.

  2 - data-name 

  is the data-name of an alphanumeric Working-Storage data item.
  It contains the full or partial file specification.
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