===================================================================
RCS file: /cvsrepo/anoncvs/cvs/www/plus23.html,v
retrieving revision 1.68
retrieving revision 1.69
diff -u -r1.68 -r1.69
--- www/plus23.html	2018/03/25 03:02:08	1.68
+++ www/plus23.html	2018/10/09 15:12:03	1.69
@@ -78,6 +78,7 @@
 <a href="plus61.html">6.1</a>,
 <a href="plus62.html">6.2</a>,
 <a href="plus63.html">6.3</a>,
+<a href="plus64.html">6.4</a>,
 <a href="plus.html">current</a>.
 <br>