+ * Revision 1.4 1996-10-29 13:55:27 adam
+ * Include of zebrautl.h instead of alexutil.h.
+ *
+ * Revision 1.3 1996/10/08 13:00:41 adam
+ * Bug fix: result sets with ranked operands in boolean operations weren't
+ * sorted.
+ *
+ * Revision 1.2 1996/05/15 18:35:17 adam