OPEN Statement - Format 1 - Sequential

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OPEN Statement — Format 1 — Sequential

>>-OPEN--------------------------------------------------------->

   .------------------------------------------------------.   
   |          .--------------------------------------.    |   
   V          V                                      |    |   
>----+-INPUT----file-name-1--+---------------------+-+--+-+----><
     |                       +-REVERSED------------+    |     
     |                       '-+------+--NO REWIND-'    |     
     |                         '-WITH-'                 |     
     |         .--------------------------------------. |     
     |         V                                      | |     
     +-OUTPUT----file-name-2--+---------------------+-+-+     
     |                        '-+------+--NO REWIND-'   |     
     |                          '-WITH-'                |     
     |      .-------------.                             |     
     |      V             |                             |     
     +-I-O----file-name-3-+-----------------------------+     
     |         .-------------.                          |     
     |         V             |                          |     
     '-EXTEND----file-name-4-+--------------------------'