埋め込みの説明
@1@ : 一意名の名標
例題
[C3090.cob] 000001 IDENTIFICATION DIVISION. 000002 PROGRAM-ID. C3090. 000003 ENVIRONMENT DIVISION. 000004 DATA DIVISION. 000005 WORKING-STORAGE SECTION. 000006 01 A PIC 9(10) PACKED-DECIMAL. 000007 01 B PIC XX. 000008 01 C PIC X(4). 000009 PROCEDURE DIVISION. 000010 P-START. 000011 UNSTRING A DELIMITED BY B INTO C. 000012 STOP RUN.
C3090.cob 11: JMN3090I-S UNSTRING文の送出し側項目'A'のUSAGEは，DISPLAYでなければなりません．
