埋め込みの説明
@1@ : STD
例題
[C9013.cob] 000001 @OPTIONS FLAGSW(STDH) 000002 IDENTIFICATION DIVISION. 000003 PROGRAM-ID. C9013. 000004 ENVIRONMENT DIVISION. 000005 DATA DIVISION. 000006 WORKING-STORAGE SECTION. 000007 PROCEDURE DIVISION. 000008 P-START. 000009 DISPLAY NC"日本語". 000010 STOP RUN.
C9013.cob 9: JMN9013I-W (STD)日本語定数は共通範囲外です．処理を続行します．
