埋め込みの説明
@1@ : 一意名
例題
[C3028.cob] 000001 IDENTIFICATION DIVISION. 000002 PROGRAM-ID. C3028. 000003 ENVIRONMENT DIVISION. 000004 DATA DIVISION. 000005 WORKING-STORAGE SECTION. 000006 01 LIB-NAME PIC S9(8). 000007 PROCEDURE DIVISION. 000008 P-START. 000009 CALL LIB-NAME.
C3028.cob 9: JMN3028I-S CALL文の一意名'LIB-NAME'は，英数字項目または日本語項目でなければなりません．
