例
000001 IDENTIFICATION DIVISION.
000002 PROGRAM-ID. C3169.
000003 ENVIRONMENT DIVISION.
000004 INPUT-OUTPUT SECTION.
000005 FILE-CONTROL.
000006 SELECT FILE-1 ASSIGN TO SYS001
000007 ORGANIZATION IS RELATIVE
000008 ACCESS MODE IS SEQUENTIAL
000009 RELATIVE KEY IS REL-KEY.
000010 DATA DIVISION.
000011 FILE SECTION.
000012 FD FILE-1.
000013 01 REC-1 PIC X(80).
000014 WORKING-STORAGE SECTION.
000015 77 REL-KEY PIC 99.
000016 77 KEY-DATA PIC XX.
000017 PROCEDURE DIVISION.
000018 START FILE-1 KEY IS = KEY-DATA.
000019 STOP RUN.
C3169.cob (18) : JMN3169I-S 相対ファイルに対するSTART文のKEY指定には，RELATIVE KEY句で指定した項目以外は記述できません．