===================================================================
RCS file: /cvsrepo/anoncvs/cvs/www/plus51.html,v
retrieving revision 1.30
retrieving revision 1.31
diff -u -r1.30 -r1.31
--- www/plus51.html	2018/03/25 03:02:09	1.30
+++ www/plus51.html	2018/10/09 15:12:03	1.31
@@ -76,6 +76,7 @@
 <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>