  COBOL RMS File Operations? 
 The Question is:
 
i want to create a file in cobol prog but as extend
 
 The Answer is:
 
 
  The COBOL User Manual includes an example of using OPEN EXTEND.
 
  Extending a Sequential File
 
  To position a file to its current end, and to allow the program
  to write new records beyond the last record in the file, use both:
 
    The EXTEND phrase of the OPEN statement
    The WRITE statement
 
  Example 6-37 shows how to extend a sequential file.
 
 IDENTIFICATION DIVISION.
 PROGRAM-ID. SEQ04.
 ENVIRONMENT DIVISION.
 INPUT-OUTPUT SECTION.
 FILE-CONTROL.
    SELECT TRANS-FILE ASSIGN TO "TRANS".
 DATA DIVISION.
 FILE SECTION.
 FD  TRANS-FILE.
 01  TRANSACTION-RECORD    PIC X(25).
 PROCEDURE DIVISION.
 A000-BEGIN.
     OPEN EXTEND TRANS-FILE.
     PERFORM A100-WRITE-RECORD
        UNTIL TRANSACTION-RECORD = "END".
     CLOSE TRANS-FILE.
     STOP RUN.
 A100-WRITE-RECORD.
     DISPLAY "Enter next record  - X(25)".
     DISPLAY "Enter END to terminate the session".
     DISPLAY "-------------------------".
     ACCEPT TRANSACTION-RECORD.
     IF TRANSACTION-RECORD NOT = "END"
        WRITE TRANSACTION-RECORD.
 
 
  Without the EXTEND mode, a Compaq COBOL program would have to open
  the input file, copy the contents to an output file, and add records
  to the output file.  (An interesting parallel to the requirements
  of file updates within the since-retired Spiralog file system, the
  OpenVMS Wizard might add.)
 
