mercurial/commands.py

--- a/mercurial/commands.py	Thu Jun 18 15:39:52 2015 -0500
+++ b/mercurial/commands.py	Fri Jun 19 11:07:15 2015 -0700
@@ -4985,6 +4985,8 @@
 
     Returns 0 on success, 1 if no phases were changed or some could not
     be changed.
+
+    (For more information about the phases concept, see :hg:`help phases`.)
     """
     # search for a unique phase argument
     targetphase = None