例題
[P2866.cob] 000001 IDENTIFICATION DIVISION. 000002 PROGRAM-ID. P2866. 000003 ENVIRONMENT DIVISION. 000004 DATA DIVISION. 000005 WORKING-STORAGE SECTION. 000006 01 WNUM PIC S9(9) BINARY VALUE NULL. 000007 PROCEDURE DIVISION. 000008 END PROGRAM P2866.
P2866.cob 6: JMN2866I-S 表意定数NULLは，ポインタデータ項目以外のVALUE句に指定できません．
