+ * Revision 1.23 1998-03-12 11:28:45 adam
+ * Fix: didn't set root member of tagged node in function.
+ * data1_add_insert_taggeddata.
+ *
+ * Revision 1.22 1998/03/05 08:15:32 adam
+ * Implemented data1_add_insert_taggeddata utility which is more flexible
+ * than data1_insert_taggeddata.
+ *
+ * Revision 1.21 1998/02/27 14:08:05 adam
+ * Added const to some char pointer arguments.
+ * Reworked data1_read_node so that it doesn't create a tree with
+ * pointers to original "SGML"-buffer.
+ *
+ * Revision 1.20 1998/02/11 11:53:35 adam
+ * Changed code so that it compiles as C++.
+ *
+ * Revision 1.19 1997/12/09 16:17:09 adam
+ * Fix bug regarding variants. Tags with prefix "var" was incorrectly
+ * interpreted as "start of variants". Now, only "var" indicates such
+ * start.
+ * Cleaned up data1_read_node so tag names and variant names are
+ * copied and not pointed to by the generated data1 tree. Data nodes
+ * still point to old buffer.
+ *
+ * Revision 1.18 1997/11/18 09:51:09 adam
+ * Removed element num_children from data1_node. Minor changes in
+ * data1 to Explain.
+ *
+ * Revision 1.17 1997/11/05 09:20:51 adam
+ * Minor change.
+ *
+ * Revision 1.16 1997/09/17 12:10:37 adam
+ * YAZ version 1.4.
+ *
+ * Revision 1.15 1997/09/05 09:50:57 adam