diff -r f4c6dab59cd8 Doc/library/collections.abc.rst
--- a/Doc/library/collections.abc.rst	Tue Apr 26 17:04:18 2016 +0200
+++ b/Doc/library/collections.abc.rst	Fri Aug 19 02:05:42 2016 -0400
@@ -44,10 +44,13 @@
 :class:`Generator`         :class:`Iterator`      ``send``, ``throw``     ``close``, ``__iter__``, ``__next__``
 :class:`Sized`                                    ``__len__``
 :class:`Callable`                                 ``__call__``
+:class:`Collection`        :class:`Sized`,        ``__contains__``,
+                           :class:`Iterable`,     ``__iter__``,
+                           :class:`Container`     ``__len__``
 
-:class:`Sequence`          :class:`Sized`,        ``__getitem__``,        ``__contains__``, ``__iter__``, ``__reversed__``,
+:class:`Sequence`          :class:`Collection`,   ``__getitem__``,        ``__contains__``, ``__iter__``, ``__reversed__``,
                            :class:`Reversible`,   ``__len__``             ``index``, and ``count``
-                           :class:`Container`
+
 
 :class:`MutableSequence`   :class:`Sequence`      ``__getitem__``,        Inherited :class:`Sequence` methods and
                                                   ``__setitem__``,        ``append``, ``reverse``, ``extend``, ``pop``,
@@ -55,9 +58,9 @@
                                                   ``__len__``,
                                                   ``insert``
 
-:class:`Set`               :class:`Sized`,        ``__contains__``,       ``__le__``, ``__lt__``, ``__eq__``, ``__ne__``,
-                           :class:`Iterable`,     ``__iter__``,           ``__gt__``, ``__ge__``, ``__and__``, ``__or__``,
-                           :class:`Container`     ``__len__``             ``__sub__``, ``__xor__``, and ``isdisjoint``
+:class:`Set`               :class:`Collection`,   ``__contains__``,       ``__le__``, ``__lt__``, ``__eq__``, ``__ne__``,
+                                                  ``__iter__``,           ``__gt__``, ``__ge__``, ``__and__``, ``__or__``,
+                                                  ``__len__``             ``__sub__``, ``__xor__``, and ``isdisjoint``
 
 :class:`MutableSet`        :class:`Set`           ``__contains__``,       Inherited :class:`Set` methods and
                                                   ``__iter__``,           ``clear``, ``pop``, ``remove``, ``__ior__``,
@@ -65,9 +68,9 @@
                                                   ``add``,
                                                   ``discard``
 
-:class:`Mapping`           :class:`Sized`,        ``__getitem__``,        ``__contains__``, ``keys``, ``items``, ``values``,
-                           :class:`Iterable`,     ``__iter__``,           ``get``, ``__eq__``, and ``__ne__``
-                           :class:`Container`     ``__len__``
+:class:`Mapping`           :class:`Collection`,   ``__getitem__``,        ``__contains__``, ``keys``, ``items``, ``values``,
+                                                  ``__iter__``,           ``get``, ``__eq__``, and ``__ne__``
+                                                  ``__len__``
 
 :class:`MutableMapping`    :class:`Mapping`       ``__getitem__``,        Inherited :class:`Mapping` methods and
                                                   ``__setitem__``,        ``pop``, ``popitem``, ``clear``, ``update``,