INDEX_EXPRESSION  255 create.c           exp = crb_alloc_expression(INDEX_EXPRESSION);
INDEX_EXPRESSION  265 eval.c             } else if (expr->type == INDEX_EXPRESSION) {
INDEX_EXPRESSION  356 eval.c             case INDEX_EXPRESSION:	/* FALLTHRU */
INDEX_EXPRESSION  436 eval.c             case INDEX_EXPRESSION:	/* FALLTHRU */
INDEX_EXPRESSION 1533 eval.c             case INDEX_EXPRESSION: