CODE = LEFT_PAR LIST_WORDS RIGHT_PAR ;
WORD = RULE_NAME
CODE
ASSIGN
SPECIAL
END ;
LIST_WORDS = WORD LIST_WORDS
NONE ;
RULE = RULE_NAME
ASSIGN
LIST_RULE_DEF
END ;
RULE_DEF = LIST_NAME CODE ;
MAIN = RULE MAIN
CODE ;
LIST_RULE_DEF = RULE_DEF LIST_RULE_DEF
NONE ;
LIST_NAME = RULE_NAME LIST_NAME
NONE ;