+
+* Reverting this change, if applied, is more dangerous; until the wiki is
+ rebuilt, any titles, descriptions and GUIDs on unchanged pages that
+ contained markup could appear unescaped on any page that inlines them
+ in `quick=yes` mode, and is rebuilt for some other reason. The failure
+ mode here would be too little escaping, i.e. cross-site scripting.
+
+[[!tag done]]