diff -r 11eb53464e68 -r 115a9760c382 mercurial/merge.py
--- a/mercurial/merge.py	Thu Dec 16 14:50:37 2010 -0600
+++ b/mercurial/merge.py	Mon Dec 13 11:46:31 2010 -0500
@@ -255,6 +255,9 @@
     wctx is the working copy context
     mctx is the context to be merged into the working copy
     actx is the context of the common ancestor
+
+    Return a tuple of counts (updated, merged, removed, unresolved) that
+    describes how many files were affected by the update.
     """
 
     updated, merged, removed, unresolved = 0, 0, 0, 0
@@ -462,6 +465,8 @@
                  use 'hg update -C' to discard changes)
     3 = abort: uncommitted local changes
     4 = incompatible options (checked in commands.py)
+
+    Return the same tuple as applyupdates().
     """
 
     onode = node