+ * Revision 1.9 1995-09-27 12:22:28 adam
+ * More work on extract in record control.
+ * Field name is not in isam keys but in prefix in dictionary words.
+ *
+ * Revision 1.8 1995/09/14 07:48:22 adam
+ * Record control management.
+ *
+ * Revision 1.7 1995/09/11 13:09:32 adam
+ * More work on relevance feedback.
+ *
+ * Revision 1.6 1995/09/08 14:52:27 adam
+ * Minor changes. Dictionary is lower case now.
+ *
+ * Revision 1.5 1995/09/06 16:11:16 adam
+ * Option: only one word key per file.
+ *
+ * Revision 1.4 1995/09/05 15:28:39 adam
+ * More work on search engine.
+ *
+ * Revision 1.3 1995/09/04 12:33:41 adam
+ * Various cleanup. YAZ util used instead.
+ *
+ * Revision 1.2 1995/09/04 09:10:34 adam