I-O-CONTROL Paragraph
The FILE-CONTROL paragraph allows specification of input-output rules for the files described in the program.
General format
| I-O-CONTROL.     [ APPLY  { LOCK-HOLDING } ON  {File-1 } ... ] ...            { WRITE-ONLY   }     [ SAME  {RECORD  } AREA FOR {File-2 } ... ] ... .         {RECORDS} | 
Syntax rules
1.	File-1 and File-2 must be specified in the FILE-CONTROL Paragraph.
General Rules
1.	When the APPLY LOCK-HOLDING phrase is specified, multiple record locking rules are applied to File-1.
2.	The APPLY WRITE-ONLY and SAME clauses are treated as a commentary.