diff --git a/Doc/library/abc.rst b/Doc/library/abc.rst
index 21d3018..b03fc83 100644
--- a/Doc/library/abc.rst
+++ b/Doc/library/abc.rst
@@ -8,8 +8,8 @@
 .. sectionauthor:: Georg Brandl
 .. much of the content adapted from docstrings
 
-This module provides the infrastructure for defining :term:`abstract base
-classes` (ABCs) in Python, as outlined in :pep:`3119`; see the PEP for why this
+This module provides the infrastructure for defining an :term:`abstract base
+class` (ABCs) in Python, as outlined in :pep:`3119`; see the PEP for why this
 was added to Python. (See also :pep:`3141` and the :mod:`numbers` module
 regarding a type hierarchy for numbers based on ABCs.)
 
diff --git a/Doc/library/collections.rst b/Doc/library/collections.rst
index 7718c51..d2d4f47 100644
--- a/Doc/library/collections.rst
+++ b/Doc/library/collections.rst
@@ -37,42 +37,50 @@
 
 The collections module offers the following ABCs:
 
-=========================  ====================  ======================  ====================================================
-ABC                        Inherits              Abstract Methods        Mixin Methods
-=========================  ====================  ======================  ====================================================
-:class:`Container`                               ``__contains__``
-:class:`Hashable`                                ``__hash__``
-:class:`Iterable`                                ``__iter__``
-:class:`Iterator`          :class:`Iterable`     ``__next__``            ``__iter__``
-:class:`Sized`          			 ``__len__``
-
-:class:`Mapping`           :class:`Sized`,       ``__getitem__``,        ``__contains__``, ``keys``, ``items``, ``values``,
-                           :class:`Iterable`,    ``__len__``. and        ``get``, ``__eq__``, and ``__ne__``
-                           :class:`Container`    ``__iter__``
-
-:class:`MutableMapping`    :class:`Mapping`      ``__getitem__``         Inherited Mapping methods and
-                                                 ``__setitem__``,        ``pop``, ``popitem``, ``clear``, ``update``,
-                                                 ``__delitem__``,        and ``setdefault``
-						 ``__iter__``, and
-                                                 ``__len__``
-
-:class:`Sequence`          :class:`Sized`,       ``__getitem__``         ``__contains__``. ``__iter__``, ``__reversed__``.
-                           :class:`Iterable`,    and ``__len__``         ``index``, and ``count``
-                           :class:`Container`
-
-:class:`MutableSequnce`    :class:`Sequence`     ``__getitem__``         Inherited Sequence methods and
-                                                 ``__delitem__``,        ``append``, ``reverse``, ``extend``, ``pop``,
-                                                 ``insert``,             ``remove``, and ``__iadd__``
-                                                 and ``__len__``
-
-:class:`Set`               :class:`Sized`,       ``__len__``,            ``__le__``, ``__lt__``, ``__eq__``, ``__ne__``,
-                           :class:`Iterable`,    ``__iter__``, and       ``__gt__``, ``__ge__``, ``__and__``, ``__or__``
-                           :class:`Container`    ``__contains__``        ``__sub__``, ``__xor__``, and ``isdisjoint``
-
-:class:`MutableSet`        :class:`Set`          ``add`` and             Inherited Set methods and
-                                                 ``discard``             ``clear``, ``pop``, ``remove``, ``__ior__``,
-                                                                         ``__iand__``, ``__ixor__``, and ``__isub__``
-=========================  ====================  ======================  ====================================================
+=========================  =====================  ======================  ====================================================
+ABC                        Inherits               Abstract Methods        Mixin Methods
+=========================  =====================  ======================  ====================================================
+:class:`Container`                                ``__contains__``
+:class:`Hashable`                                 ``__hash__``
+:class:`Iterable`                                 ``__iter__``
+:class:`Iterator`          :class:`Iterable`      ``__next__``            ``__iter__``
+:class:`Sized`          			  ``__len__``
+:class:`Callable`                                 ``__call__``
+                                                  
+:class:`Sequence`          :class:`Sized`,        ``__getitem__``         ``__contains__``. ``__iter__``, ``__reversed__``.
+                           :class:`Iterable`,     and ``__len__``         ``index``, and ``count``
+                           :class:`Container`     
+                                                  
+:class:`MutableSequnce`    :class:`Sequence`      ``__getitem__``         Inherited Sequence methods and
+                                                  ``__delitem__``,        ``append``, ``reverse``, ``extend``, ``pop``,
+                                                  ``insert``,             ``remove``, and ``__iadd__``
+                                                  and ``__len__``
+                                                  
+:class:`Set`               :class:`Sized`,        ``__len__``,            ``__le__``, ``__lt__``, ``__eq__``, ``__ne__``,
+                           :class:`Iterable`,     ``__iter__``, and       ``__gt__``, ``__ge__``, ``__and__``, ``__or__``
+                           :class:`Container`     ``__contains__``        ``__sub__``, ``__xor__``, and ``isdisjoint``
+                                                  
+:class:`MutableSet`        :class:`Set`           ``add`` and             Inherited Set methods and
+                                                  ``discard``             ``clear``, ``pop``, ``remove``, ``__ior__``,
+                                                                          ``__iand__``, ``__ixor__``, and ``__isub__``
+                                                  
+:class:`Mapping`           :class:`Sized`,        ``__getitem__``,        ``__contains__``, ``keys``, ``items``, ``values``,
+                           :class:`Iterable`,     ``__len__``. and        ``get``, ``__eq__``, and ``__ne__``
+                           :class:`Container`     ``__iter__``
+                                                  
+:class:`MutableMapping`    :class:`Mapping`       ``__getitem__``         Inherited Mapping methods and
+                                                  ``__setitem__``,        ``pop``, ``popitem``, ``clear``, ``update``,
+                                                  ``__delitem__``,        and ``setdefault``
+						  ``__iter__``, and
+                                                  ``__len__``
+                                                  
+:class:`MappingView`       :class:`Sized`                                 ``__len__``
+:class:`KeysView`          :class:`MappingView`,                          ``__contains__``,
+                           :class:`Set`                                   ``__iter__``
+:class:`ItemsView`         :class:`MappingView`,                          ``__contains__``,
+                           :class:`Set`                                   ``__iter__``
+:class:`ValuesView`        :class:`MappingView`                           ``__contains__``, ``__iter__``
+=========================  =====================  ======================  ====================================================
 
 These ABCs allow us to ask classes or instances if they provide
 particular functionality, for example::
diff --git a/Doc/library/shutil.rst b/Doc/library/shutil.rst
index 5ab2f29..c295f29 100644
--- a/Doc/library/shutil.rst
+++ b/Doc/library/shutil.rst
@@ -78,18 +78,39 @@
    Unix command :program:`cp -p`.
 
 
-.. function:: copytree(src, dst[, symlinks])
+.. function:: ignore_patterns(\*patterns)
+
+   This factory function creates a function that can be used as a callable for
+   :func:`copytree`\'s *ignore* argument, ignoring files and directories that
+   match one of the glob-style *patterns* provided.  See the example below.
+
+
+.. function:: copytree(src, dst[, symlinks=False[, ignore=None]])
 
    Recursively copy an entire directory tree rooted at *src*.  The destination
-   directory, named by *dst*, must not already exist; it will be created as well as
-   missing parent directories. Permissions and times of directories are copied with
-   :func:`copystat`, individual files are copied using :func:`copy2`.   If
-   *symlinks* is true, symbolic links in the source tree are represented as
-   symbolic links in the new tree; if false or omitted, the contents of the linked
-   files are copied to the new tree.  If exception(s) occur, an :exc:`Error` is
-   raised with a list of reasons.
+   directory, named by *dst*, must not already exist; it will be created as well
+   as missing parent directories.  Permissions and times of directories are
+   copied with :func:`copystat`, individual files are copied using
+   :func:`copy2`.
 
-   The source code for this should be considered an example rather than a tool.
+   If *symlinks* is true, symbolic links in the source tree are represented as
+   symbolic links in the new tree; if false or omitted, the contents of the
+   linked files are copied to the new tree.
+
+   If *ignore* is given, it must be a callable that will receive as its
+   arguments the directory being visited by :func:`copytree`, and a list of its
+   contents, as returned by :func:`os.listdir`.  Since :func:`copytree` is
+   called recursively, the *ignore* callable will be called once for each
+   directory that is copied.  The callable must return a sequence of directory
+   and file names relative to the current directory (i.e. a subset of the items
+   in its second argument); these names will then be ignored in the copy
+   process.  :func:`ignore_patterns` can be used to create such a callable that
+   ignores names based on glob-style patterns.
+
+   If exception(s) occur, an :exc:`Error` is raised with a list of reasons.
+
+   The source code for this should be considered an example rather than the
+   ultimate tool.
 
 
 .. function:: rmtree(path[, ignore_errors[, onerror]])
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 9107d03..a97a519 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -2027,7 +2027,7 @@
    files, like ttys, it makes sense to continue reading after an EOF is hit.)  Note
    that this method may call the underlying C function :cfunc:`fread` more than
    once in an effort to acquire as close to *size* bytes as possible. Also note
-   that when in non-blocking mode, less data than what was requested may be
+   that when in non-blocking mode, less data than was requested may be
    returned, even if no *size* parameter was given.