+ * Revision 1.12 1996-10-08 13:00:40 adam
+ * Bug fix: result sets with ranked operands in boolean operations weren't
+ * sorted.
+ *
+ * Revision 1.11 1996/10/07 16:05:29 quinn
+ * Work.
+ *
+ * Revision 1.9 1995/12/11 09:15:26 adam
+ * New set types: sand/sor/snot - ranked versions of and/or/not in
+ * ranked/semi-ranked result sets.
+ * Note: the snot not finished yet.
+ * New rset member: flag.
+ * Bug fix: r_delete in rsrel.c did free bad memory block.
+ *
+ * Revision 1.8 1995/12/05 11:25:45 adam
+ * Doesn't include math.h.
+ *
+ * Revision 1.7 1995/10/12 12:41:57 adam