+ * Revision 1.14 1995-12-11 09:15:24 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 1.13 1995/10/12 12:41:56 adam
+ * Private info (buf) moved from struct rset_control to struct rset.
+ * Bug fixes in relevance.
+ *
+ * Revision 1.12 1995/10/10 14:00:04 adam
+ * Function rset_open changed its wflag parameter to general flags.
+ *
+ * Revision 1.11 1995/10/06 14:38:05 adam
+ * New result set method: r_score.
+ * Local no (sysno) and score is transferred to retrieveCtrl.
+ *
+ * Revision 1.10 1995/09/08 14:52:42 adam
+ * Work on relevance feedback.
+ *
+ * Revision 1.9 1995/09/07 13:58:43 adam
+ * New parameter: result-set file descriptor (RSFD) to support multiple
+ * positions within the same result-set.
+ * Boolean operators: and, or, not implemented.
+ *
+ * Revision 1.8 1995/09/06 16:11:56 adam
+ * More work on boolean sets.
+ *
+ * Revision 1.7 1995/09/06 10:35:44 adam
+ * Null set implemented.
+ *
+ * Revision 1.6 1995/09/05 11:43:24 adam
+ * Complete version of temporary sets. Not tested yet though.
+ *
+ * Revision 1.5 1995/09/04 12:33:56 adam
+ * Various cleanup. YAZ util used instead.
+ *
+ * Revision 1.4 1995/09/04 09:10:55 adam
+ * Minor changes.
+ *
+ * Revision 1.3 1994/11/22 13:15:37 quinn