例
000001 IDENTIFICATION DIVISION.
000002 PROGRAM-ID. C3128.
000003 ENVIRONMENT DIVISION.
000004 INPUT-OUTPUT SECTION.
000005 FILE-CONTROL.
000006 SELECT FILE-1 ASSIGN TO S-SYS001.
000007 DATA DIVISION.
000008 FILE SECTION.
000009 FD FILE-1.
000010 01 REC-1 PIC X(80).
000011 WORKING-STORAGE SECTION.
000012 01 CNTL-DATA PIC X(36).
000013 PROCEDURE DIVISION.
000014 WRITE REC-1 CONTROL AREA IS CNTL-DATA.
000015 STOP RUN.
C3128.cob (14) : JMN3128I-S CONTROL AREA句は,通信ファイル以外に指定できません.