--- a/mod_csi/README.markdown	Thu Sep 24 00:32:37 2015 +0200
+++ b/mod_csi/README.markdown	Thu Sep 24 00:51:49 2015 +0200
@@ -5,9 +5,10 @@
 Introduction
 ============
 
-This module implements Client State Indication, a way for mobile clients
-to tell the server that they are sitting in someones pocket and would
-rather not get some less urgent things pushed to it.
+This module implements [Client State
+Indication](http://xmpp.org/extensions/xep-0352.html), a way for mobile
+clients to tell the server that they are sitting in someones pocket and
+would rather not get some less urgent things pushed to it.
 
 However this module does not do anything by itself. Deciding what things
 are considered "less urgent" is left to other modules.