【例】
1 1 2 2 2 3 3 4 4 4 5 5 6 6 6 7
7----2---6---0---4---8---2---6---0---4---8---2---6---0---4---8---2
OPEN INPUT
INP-FILE.
OPEN OUTPUT
OUT-FILE
REF-FILE.
READ INP-FILE AT END
MOVE FLG-TRUE TO FLG-END
END-READ.
WRITE OUT-REC FROM INP-REC.
WRITE REF-REC FROM WK1-HEAD
AFTER 2.
CLOSE
INP-FILE
OUT-FILE
REF-FILE.