diff --git a/Doc/library/2to3.rst b/Doc/library/2to3.rst
index d9eb00c..20a6245 100644
--- a/Doc/library/2to3.rst
+++ b/Doc/library/2to3.rst
@@ -122,7 +122,8 @@
 
 .. 2to3fixer:: callable
 
-   Converts ``callable(x)`` to ``hasattr(x, "__call_")``.
+   Converts ``callable(x)`` to ``isinstance(x, collections.Callable)``, adding
+   an import to :mod:`collections` if needed.
 
 .. 2to3fixer:: dict
 
diff --git a/Doc/library/ctypes.rst b/Doc/library/ctypes.rst
index 4f632f2..652a2f4 100644
--- a/Doc/library/ctypes.rst
+++ b/Doc/library/ctypes.rst
@@ -1005,7 +1005,7 @@
    >>>
 
 It is funny to see that on linux the sort function seems to work much more
-efficient, it is doing less comparisons::
+efficiently, it is doing less comparisons::
 
    >>> qsort(ia, len(ia), sizeof(c_int), cmp_func) # doctest: +LINUX
    py_cmp_func 5 1
diff --git a/Doc/library/logging.rst b/Doc/library/logging.rst
index aa83314..42a279c 100644
--- a/Doc/library/logging.rst
+++ b/Doc/library/logging.rst
@@ -1611,6 +1611,8 @@
 and :meth:`flush` methods).
 
 
+.. currentmodule:: logging
+
 .. class:: StreamHandler(stream=None)
 
    Returns a new instance of the :class:`StreamHandler` class. If *stream* is
diff --git a/Doc/library/msvcrt.rst b/Doc/library/msvcrt.rst
index 2b31180..d968833 100644
--- a/Doc/library/msvcrt.rst
+++ b/Doc/library/msvcrt.rst
@@ -144,6 +144,4 @@
 .. function:: heapmin()
 
    Force the :cfunc:`malloc` heap to clean itself up and return unused blocks to
-   the operating system.  This only works on Windows NT.  On failure, this raises
-   :exc:`IOError`.
-
+   the operating system.  On failure, this raises :exc:`IOError`.
diff --git a/Doc/library/optparse.rst b/Doc/library/optparse.rst
index 523079f..9527d35 100644
--- a/Doc/library/optparse.rst
+++ b/Doc/library/optparse.rst
@@ -153,9 +153,7 @@
    an option that must be supplied on the command-line; note that the phrase
    "required option" is self-contradictory in English.  :mod:`optparse` doesn't
    prevent you from implementing required options, but doesn't give you much
-   help at it either.  See ``examples/required_1.py`` and
-   ``examples/required_2.py`` in the :mod:`optparse` source distribution for two
-   ways to implement required options with :mod:`optparse`.
+   help at it either.
 
 For example, consider this hypothetical command-line::
 
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 5e8bdc1..2cd9dde 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -13,26 +13,34 @@
 module, and for high-level file and directory handling see the :mod:`shutil`
 module.
 
-The design of all built-in operating system dependent modules of Python is such
-that as long as the same functionality is available, it uses the same interface;
-for example, the function ``os.stat(path)`` returns stat information about
-*path* in the same format (which happens to have originated with the POSIX
-interface).
+Notes on the availability of these functions:
 
-Extensions peculiar to a particular operating system are also available through
-the :mod:`os` module, but using them is of course a threat to portability!
+* The design of all built-in operating system dependent modules of Python is
+  such that as long as the same functionality is available, it uses the same
+  interface; for example, the function ``os.stat(path)`` returns stat
+  information about *path* in the same format (which happens to have originated
+  with the POSIX interface).
 
-.. note::
+* Extensions peculiar to a particular operating system are also available
+  through the :mod:`os` module, but using them is of course a threat to
+  portability.
 
-   All functions accepting path or file names accept both bytes and string
-   objects, and result in an object of the same type, if a path or file name is
-   returned.
+* All functions accepting path or file names accept both bytes and string
+  objects, and result in an object of the same type, if a path or file name is
+  returned.
 
 .. note::
 
    If not separately noted, all functions that claim "Availability: Unix" are
    supported on Mac OS X, which builds on a Unix core.
 
+* An "Availability: Unix" note means that this function is commonly found on
+  Unix systems.  It does not make any claims about its existence on a specific
+  operating system.
+
+* If not separately noted, all functions that claim "Availability: Unix" are
+  supported on Mac OS X, which builds on a Unix core.
+
 .. note::
 
    All functions in this module raise :exc:`OSError` in the case of invalid or
@@ -46,9 +54,9 @@
 
 .. data:: name
 
-   The name of the operating system dependent module imported.  The following names
-   have currently been registered: ``'posix'``, ``'nt'``, ``'mac'``, ``'os2'``,
-   ``'ce'``, ``'java'``.
+   The name of the operating system dependent module imported.  The following
+   names have currently been registered: ``'posix'``, ``'nt'``, ``'mac'``,
+   ``'os2'``, ``'ce'``, ``'java'``.
 
 
 .. _os-filenames:
diff --git a/Doc/library/select.rst b/Doc/library/select.rst
index 73e8cd9..51fdbbe 100644
--- a/Doc/library/select.rst
+++ b/Doc/library/select.rst
@@ -46,7 +46,7 @@
    :ref:`kqueue-objects` below for the methods supported by kqueue objects.
 
 
-.. function:: kevent(ident, filter=KQ_FILTER_READ, flags=KQ_ADD, fflags=0, data=0, udata=0)
+.. function:: kevent(ident, filter=KQ_FILTER_READ, flags=KQ_EV_ADD, fflags=0, data=0, udata=0)
 
    (Only supported on BSD.)  Returns a kernel event object object; see section
    :ref:`kevent-objects` below for the methods supported by kqueue objects.
diff --git a/Doc/library/stdtypes.rst b/Doc/library/stdtypes.rst
index 6aacfbe..8c2c4e4 100644
--- a/Doc/library/stdtypes.rst
+++ b/Doc/library/stdtypes.rst
@@ -2454,8 +2454,7 @@
 
 .. attribute:: class.__bases__
 
-   The tuple of base classes of a class object.  If there are no base classes, this
-   will be an empty tuple.
+   The tuple of base classes of a class object.
 
 
 .. attribute:: class.__name__
diff --git a/Doc/library/string.rst b/Doc/library/string.rst
index 93791c7..d43d83e 100644
--- a/Doc/library/string.rst
+++ b/Doc/library/string.rst
@@ -86,6 +86,7 @@
 you to create and customize your own string formatting behaviors using the same
 implementation as the built-in :meth:`format` method.
 
+
 .. class:: Formatter
 
    The :class:`Formatter` class has the following public methods:
@@ -470,6 +471,8 @@
 Template strings
 ----------------
 
+.. versionadded:: 2.4
+
 Templates provide simpler string substitutions as described in :pep:`292`.
 Instead of the normal ``%``\ -based substitutions, Templates support ``$``\
 -based substitutions, using the following rules: