diff --git a/Doc/library/compileall.rst b/Doc/library/compileall.rst
index c359676..8a93f9b 100644
--- a/Doc/library/compileall.rst
+++ b/Doc/library/compileall.rst
@@ -6,9 +6,10 @@
 
 
 This module provides some utility functions to support installing Python
-libraries.  These functions compile Python source files in a directory tree,
-allowing users without permission to write to the libraries to take advantage of
-cached byte-code files.
+libraries.  These functions compile Python source files in a directory tree.
+This module can be used to create the cached byte-code files at library
+installation time, which makes them available for use even by users who don't
+have write permission to the library directories.
 
 
 Command-line use
@@ -27,7 +28,8 @@
 
 .. cmdoption:: -l
 
-   Do not recurse.
+   Do not recurse into subdirectories, only compile source code files directly
+   contained in the named or implied directories.
 
 .. cmdoption:: -f
 
@@ -35,15 +37,20 @@
 
 .. cmdoption:: -q
 
-   Do not print the list of files compiled.
+   Do not print the list of files compiled, print only error messages.
 
 .. cmdoption:: -d destdir
 
-   Purported directory name for error messages.
+   Directory prepended to the path to each file being compiled.  This will
+   appear in compilation time tracebacks, and is also compiled in to the
+   byte-code file, where it will be used in tracebacks and other messages in
+   cases where the source file does not exist at the time the byte-code file is
+   executed.
 
 .. cmdoption:: -x regex
 
-   Skip files with a full path that matches given regular expression.
+   regex is used to search the full path to each file considered for
+   compilation, and if the regex produces a match, the file is skipped.
 
 
 Public functions
@@ -52,24 +59,34 @@
 .. function:: compile_dir(dir, maxlevels=10, ddir=None, force=False, rx=None, quiet=False)
 
    Recursively descend the directory tree named by *dir*, compiling all :file:`.py`
-   files along the way.  The *maxlevels* parameter is used to limit the depth of
-   the recursion; it defaults to ``10``.  If *ddir* is given, it is used as the
-   base path from  which the filenames used in error messages will be generated.
+   files along the way.
+
+   The *maxlevels* parameter is used to limit the depth of the recursion; it
+   defaults to ``10``.
+
+   If *ddir* is given, it is prepended to the path to each file being compiled
+   for use in compilation time tracebacks, and is also compiled in to the
+   byte-code file, where it will be used in tracebacks and other messages in
+   cases where the source file does not exist at the time the byte-code file is
+   executed.
+
    If *force* is true, modules are re-compiled even if the timestamps are up to
    date.
 
-   If *rx* is given, it specifies a regular expression of file names to exclude
-   from the search; that expression is searched for in the full path.
+   If *rx* is given, its search method is called on the complete path to each
+   file considered for compilation, and if it returns a true value, the file
+   is skipped.
 
-   If *quiet* is true, nothing is printed to the standard output in normal
-   operation.
+   If *quiet* is true, nothing is printed to the standard output unless errors
+   occur.
 
 .. function:: compile_path(skip_curdir=True, maxlevels=0, force=False)
 
    Byte-compile all the :file:`.py` files found along ``sys.path``. If
-   *skip_curdir* is true (the default), the current directory is not included in
-   the search.  The *maxlevels* and *force* parameters default to ``0`` and are
-   passed to the :func:`compile_dir` function.
+   *skip_curdir* is true (the default), the current directory is not included
+   in the search.  All other parameters are passed to the :func:`compile_dir`
+   function.  Note that unlike the other compile functions, ``maxlevels``
+   defaults to ``0``.
 
 To force a recompile of all the :file:`.py` files in the :file:`Lib/`
 subdirectory and all its subdirectories::
diff --git a/Doc/library/email.header.rst b/Doc/library/email.header.rst
index 05acae7..2202637 100644
--- a/Doc/library/email.header.rst
+++ b/Doc/library/email.header.rst
@@ -63,7 +63,7 @@
    character set is used both as *s*'s initial charset and as the default for
    subsequent :meth:`append` calls.
 
-   The maximum line length can be specified explicit via *maxlinelen*.  For
+   The maximum line length can be specified explicitly via *maxlinelen*.  For
    splitting the first line to a shorter value (to account for the field header
    which isn't included in *s*, e.g. :mailheader:`Subject`) pass in the name of the
    field in *header_name*.  The default *maxlinelen* is 76, and the default value
diff --git a/Doc/library/http.client.rst b/Doc/library/http.client.rst
index f8aedcc..cbe4f05 100644
--- a/Doc/library/http.client.rst
+++ b/Doc/library/http.client.rst
@@ -381,8 +381,10 @@
 
 .. method:: HTTPConnection.set_debuglevel(level)
 
-   Set the debugging level (the amount of debugging output printed). The default
-   debug level is ``0``, meaning no debugging output is printed.
+   Set the debugging level.  The default debug level is ``0``, meaning no
+   debugging output is printed.  Any value greater than ``0`` will cause all
+   currently defined debug output to be printed to stdout.  The ``debuglevel``
+   is passed to any new :class:`HTTPResponse` objects that are created.
 
    .. versionadded:: 3.1
 
diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index d5aa6fe..cf012ff 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -534,7 +534,7 @@
 
 .. function:: fstat(fd)
 
-   Return status for file descriptor *fd*, like :func:`stat`.
+   Return status for file descriptor *fd*, like :func:`~os.stat`.
 
    Availability: Unix, Windows.
 
@@ -952,9 +952,10 @@
 
 .. function:: lstat(path)
 
-   Like :func:`stat`, but do not follow symbolic links.  This is an alias for
-   :func:`stat` on platforms that do not support symbolic links, such as
-   Windows.
+   Perform the equivalent of an :c:func:`lstat` system call on the given path.
+   Similar to :func:`~os.stat`, but does not follow symbolic links.  On
+   platforms that do not support symbolic links, this is an alias for
+   :func:`~os.stat`.
 
 
 .. function:: mkfifo(path[, mode])
@@ -1138,48 +1139,43 @@
 
 .. function:: stat(path)
 
-   Perform a :cfunc:`stat` system call on the given path.  The return value is an
-   object whose attributes correspond to the members of the :ctype:`stat`
-   structure, namely: :attr:`st_mode` (protection bits), :attr:`st_ino` (inode
-   number), :attr:`st_dev` (device), :attr:`st_nlink` (number of hard links),
-   :attr:`st_uid` (user id of owner), :attr:`st_gid` (group id of owner),
-   :attr:`st_size` (size of file, in bytes), :attr:`st_atime` (time of most recent
-   access), :attr:`st_mtime` (time of most recent content modification),
-   :attr:`st_ctime` (platform dependent; time of most recent metadata change on
-   Unix, or the time of creation on Windows)::
+   Perform the equivalent of a :c:func:`stat` system call on the given path.
+   (This function follows symlinks; to stat a symlink use :func:`lstat`.)
 
-      >>> import os
-      >>> statinfo = os.stat('somefile.txt')
-      >>> statinfo
-      (33188, 422511, 769, 1, 1032, 100, 926, 1105022698,1105022732, 1105022732)
-      >>> statinfo.st_size
-      926
-      >>>
+   The return value is an object whose attributes correspond to the members
+   of the :c:type:`stat` structure, namely:
 
+   * :attr:`st_mode` - protection bits,
+   * :attr:`st_ino` - inode number,
+   * :attr:`st_dev` - device,
+   * :attr:`st_nlink` - number of hard links,
+   * :attr:`st_uid` - user id of owner,
+   * :attr:`st_gid` - group id of owner,
+   * :attr:`st_size` - size of file, in bytes,
+   * :attr:`st_atime` - time of most recent access,
+   * :attr:`st_mtime` - time of most recent content modification,
+   * :attr:`st_ctime` - platform dependent; time of most recent metadata change on
+     Unix, or the time of creation on Windows)
 
    On some Unix systems (such as Linux), the following attributes may also be
-   available: :attr:`st_blocks` (number of blocks allocated for file),
-   :attr:`st_blksize` (filesystem blocksize), :attr:`st_rdev` (type of device if an
-   inode device). :attr:`st_flags` (user defined flags for file).
+   available:
+
+   * :attr:`st_blocks` - number of blocks allocated for file
+   * :attr:`st_blksize` - filesystem blocksize
+   * :attr:`st_rdev` - type of device if an inode device
+   * :attr:`st_flags` - user defined flags for file
 
    On other Unix systems (such as FreeBSD), the following attributes may be
-   available (but may be only filled out if root tries to use them): :attr:`st_gen`
-   (file generation number), :attr:`st_birthtime` (time of file creation).
+   available (but may be only filled out if root tries to use them):
+
+   * :attr:`st_gen` - file generation number
+   * :attr:`st_birthtime` - time of file creation
 
    On Mac OS systems, the following attributes may also be available:
-   :attr:`st_rsize`, :attr:`st_creator`, :attr:`st_type`.
 
-   .. index:: module: stat
-
-   For backward compatibility, the return value of :func:`stat` is also accessible
-   as a tuple of at least 10 integers giving the most important (and portable)
-   members of the :ctype:`stat` structure, in the order :attr:`st_mode`,
-   :attr:`st_ino`, :attr:`st_dev`, :attr:`st_nlink`, :attr:`st_uid`,
-   :attr:`st_gid`, :attr:`st_size`, :attr:`st_atime`, :attr:`st_mtime`,
-   :attr:`st_ctime`. More items may be added at the end by some implementations.
-   The standard module :mod:`stat` defines functions and constants that are useful
-   for extracting information from a :ctype:`stat` structure. (On Windows, some
-   items are filled with dummy values.)
+   * :attr:`st_rsize`
+   * :attr:`st_creator`
+   * :attr:`st_type`
 
    .. note::
 
@@ -1189,13 +1185,35 @@
       :attr:`st_mtime` has 2-second resolution, and :attr:`st_atime` has only 1-day
       resolution.  See your operating system documentation for details.
 
+   For backward compatibility, the return value of :func:`~os.stat` is also accessible
+   as a tuple of at least 10 integers giving the most important (and portable)
+   members of the :ctype:`stat` structure, in the order :attr:`st_mode`,
+   :attr:`st_ino`, :attr:`st_dev`, :attr:`st_nlink`, :attr:`st_uid`,
+   :attr:`st_gid`, :attr:`st_size`, :attr:`st_atime`, :attr:`st_mtime`,
+   :attr:`st_ctime`. More items may be added at the end by some implementations.
+
+   .. index:: module: stat
+
+   The standard module :mod:`stat` defines functions and constants that are useful
+   for extracting information from a :ctype:`stat` structure. (On Windows, some
+   items are filled with dummy values.)
+
+   Example::
+
+      >>> import os
+      >>> statinfo = os.stat('somefile.txt')
+      >>> statinfo
+      (33188, 422511, 769, 1, 1032, 100, 926, 1105022698,1105022732, 1105022732)
+      >>> statinfo.st_size
+      926
+
    Availability: Unix, Windows.
 
 
 .. function:: stat_float_times([newvalue])
 
    Determine whether :class:`stat_result` represents time stamps as float objects.
-   If *newvalue* is ``True``, future calls to :func:`stat` return floats, if it is
+   If *newvalue* is ``True``, future calls to :func:`~os.stat` return floats, if it is
    ``False``, future calls return ints. If *newvalue* is omitted, return the
    current setting.
 
@@ -1255,8 +1273,8 @@
    respectively. Whether a directory can be given for *path* depends on whether
    the operating system implements directories as files (for example, Windows
    does not).  Note that the exact times you set here may not be returned by a
-   subsequent :func:`stat` call, depending on the resolution with which your
-   operating system records access and modification times; see :func:`stat`.
+   subsequent :func:`~os.stat` call, depending on the resolution with which your
+   operating system records access and modification times; see :func:`~os.stat`.
 
    Availability: Unix, Windows.