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

  The LOCK MODE clause specifies a locking technique to use for a
  file. LOCK MODE is part of the X/Open COBOL standard.

  Format -

      [             { MANUAL WITH LOCK ON MULTIPLE RECORDS } ]
      [LOCK MODE IS { AUTOMATIC [WITH LOCK ON RECORD]      } ]
      [             { EXCLUSIVE                            } ]
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