+--- 1.0 1999/12/10
+
+The software was split in two products Zebra (for testing,
+non-profit use) and the commercial product Z'mbol. Zebra no
+longer supports INDEX UPDATES, i.e. zebraidx should be invoked only
+once for each register. Refer to LICENSE.zebra for more info.
+
Added support for multiple records in one file for filter grs.sgml.
Changed record index structure. New layout is incompatible with