LOGICAL_NOT_EXPRESSION  255 create.c           exp = crb_alloc_expression(LOGICAL_NOT_EXPRESSION);
LOGICAL_NOT_EXPRESSION  371 eval.c             case LOGICAL_NOT_EXPRESSION:	/* FALLTHRU */
LOGICAL_NOT_EXPRESSION  451 eval.c             case LOGICAL_NOT_EXPRESSION:	/* FALLTHRU */
LOGICAL_NOT_EXPRESSION 1684 eval.c             case LOGICAL_NOT_EXPRESSION: