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COBOL, ENVIRONMENT_DIVISION, FILE-CONTROL, clauses, RESERVE
 *Conan The Librarian 

  The RESERVE clause specifies the number of input-output buffers for
  a file.

  Format -

   RESERVE reserve-num [ AREA  ]
                       [ AREAS ]

  1 - reserve-num 

  is an integer literal from 1 through 127.  It specifies the number
  of input-output areas for the file.
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