埋め込みの説明
@1@ : RECORD KEYまたはALTERNATE RECORD KEY．
@2@ : 255または253．
例題
[P2815.cob] 000001 IDENTIFICATION DIVISION. 000002 PROGRAM-ID. P2815. 000003 ENVIRONMENT DIVISION. 000004 INPUT-OUTPUT SECTION. 000005 FILE-CONTROL. 000006 SELECT IXFILE1 ASSIGN TO SYS001 000007 ORGANIZATION IS INDEXED 000008 RECORD KEY IS WRKY1 000009 WRKY2 000010 WRKY3. 000011 I-O-CONTROL. 000012 DATA DIVISION. 000013 FILE SECTION. 000014 FD IXFILE1. 000015 01 IXF1REC. 000016 02 WRKY1 PIC X(86). 000017 02 WRKY2 PIC X(86). 000018 02 WRKY3 PIC X(86). 000019 02 PIC X(80). 000020 WORKING-STORAGE SECTION. 000021 PROCEDURE DIVISION. 000022 END PROGRAM P2815.
P2815.cob 10: JMN2815I-S RECORD KEY句のデータ名の総項目長は，255バイトを超えてはなりません．
詳細な説明
COBOL処理系の定量制限です．
