--- a/doc/book/en/admin/instance-config.rst	Thu Oct 27 18:19:00 2011 +0200
+++ b/doc/book/en/admin/instance-config.rst	Fri Oct 28 10:32:48 2011 +0200
@@ -169,6 +169,8 @@
     file to write messages
 
 
+.. _PersistentProperties:
+
 Configuring persistent properties
 ---------------------------------
 Other configuration settings are in the form of entities `CWProperty`