埋め込みの説明
@1@ : データ名
@2@ : READ文, START文
@3@ : 指定
例題
[C3309.cob] 000001 IDENTIFICATION DIVISION. 000002 PROGRAM-ID. C3309. 000003 ENVIRONMENT DIVISION. 000004 INPUT-OUTPUT SECTION. 000005 FILE-CONTROL. 000006 SELECT FILE-1 ASSIGN TO SYS001 000007 ORGANIZATION IS INDEXED 000008 RECORD KEY IS KEY-1 000009 ACCESS MODE IS RANDOM. 000010 DATA DIVISION. 000011 BASED-STORAGE SECTION. 000012 01 BSD-1 PIC X BASED ON PTR1. 000013 FILE SECTION. 000014 FD FILE-1. 000015 01 REC-1. 000016 02 KEY-1 PIC X(5). 000017 02 PIC X(75). 000018 WORKING-STORAGE SECTION. 000019 01 PTR1 POINTER. 000020 PROCEDURE DIVISION. 000021 OPEN INPUT FILE-1. 000022 READ FILE-1 KEY IS BSD-1. 000023 CLOSE FILE-1. 000024 END PROGRAM C3309.
C3309.cob 22: JMN3309I-S 基底場所節に定義されたデータ名'BSD-1'は,READ文のKEY指定に記述できません.