--- a/hg.rst	Sat Jan 02 20:10:31 2016 +0200
+++ b/hg.rst	Sun Jan 03 11:22:54 2016 +0200
@@ -500,6 +500,13 @@
   $ hg log -r "sort(tag() and ancestors($REV),-date)"
   $ hg log -r $REV --template "{latesttag}-{latesttagdistance}-{node|short}\n"
 
+Author statistic.
+=================
+
+Ecanle extention ``churn`` and run::
+
+  $ hg churn
+
 Hooks.
 ======