OPEN Statement — Format 1 — Sequential

1 OPEN
2+ 
2.0 INPUT
2.0.1+ 
2.0.1 file-name-1
2.0.1.1? 
2.0.1.1 REVERSED
2.0.1.1? WITH
2.0.1.1.1 NO REWIND
2.0 OUTPUT
2.0.1+ 
2.0.1 file-name-2
2.0.1.1? WITH
2.0.1.1.1 NO REWIND
2.0 I-O
2.0.1+ 
2.0.1 file-name-3
2.0 EXTEND
2.0.1+ 
2.0.1 file-name-4