例
000001 IDENTIFICATION DIVISION.
000002 PROGRAM-ID. C1287.
000003 ENVIRONMENT DIVISION.
000004 CONFIGURATION SECTION.
000005 SPECIAL-NAMES.
000006 ALPHABET
000007 HUGO1 IS NATIVE
000008 HUGO1 IS EBCDIC
000009 SYMBOLIC CHARACTERS
000010 A IS 1 IN HUGO1
000011 B IS 2 IN HUGO1.
000012 END PROGRAM C1287.
C1287.cob (9) : JMN1287I-S SYMBOLIC CHARACTERS句に指定された符号系名が,多重定義です.