diff -r d5e15f5067c9 Doc/library/stdtypes.rst
--- a/Doc/library/stdtypes.rst	Sun Dec 07 13:46:02 2014 -0500
+++ b/Doc/library/stdtypes.rst	Sun Dec 07 17:06:27 2014 -0500
@@ -3761,6 +3761,8 @@
       Return the item of *d* with key *key*.  Raises a :exc:`KeyError` if *key* is
       not in the map.
 
+	  .. index:: __missing__()
+	  
       If a subclass of dict defines a method :meth:`__missing__`, if the key *key*
       is not present, the ``d[key]`` operation calls that method with the key *key*
       as argument.  The ``d[key]`` operation then returns or raises whatever is
@@ -3779,8 +3781,9 @@
           >>> c['red']
           1
 
-      See :class:`collections.Counter` for a complete implementation including
-      other methods helpful for accumulating and managing tallies.
+      The example above shows part of the implementation of
+      :class:`collections.Counter`.  A different ``__missing__`` method is used
+      by :class:`collections.defaultdict`.
 
    .. describe:: d[key] = value
 
diff -r d5e15f5067c9 Doc/reference/datamodel.rst
--- a/Doc/reference/datamodel.rst	Sun Dec 07 13:46:02 2014 -0500
+++ b/Doc/reference/datamodel.rst	Sun Dec 07 17:06:27 2014 -0500
@@ -1904,6 +1904,12 @@
       indexes to allow proper detection of the end of the sequence.
 
 
+.. method:: object.__missing__(self, key)
+
+   Called by dict.__getitem__ to implement ``self[key]`` for dict subclasses
+   when key is not in the subdict.
+
+
 .. method:: object.__setitem__(self, key, value)
 
    Called to implement assignment to ``self[key]``.  Same note as for