--- a/includes/wikiformat.php	Wed Aug 26 13:04:55 2009 -0400
+++ b/includes/wikiformat.php	Wed Aug 26 13:05:17 2009 -0400
@@ -62,6 +62,7 @@
       'blockquote',
       'tables',
       'heading',
+      'hr',
       // note: can't be named list ("list" is a PHP language construct)
       'multilist',
       'bold',