diff --git a/Doc/library/os.rst b/Doc/library/os.rst
index 55e007a..951474f 100644
--- a/Doc/library/os.rst
+++ b/Doc/library/os.rst
@@ -274,7 +274,8 @@
 .. function:: strerror(code)
 
    Return the error message corresponding to the error code in *code*.
-   Availability: Unix, Windows.
+   On platforms where :cfunc:`strerror` returns ``NULL`` when given an unknown
+   error number, :exc:`ValueError` is raised.  Availability: Unix, Windows.
 
 
 .. function:: umask(mask)
diff --git a/Doc/library/othergui.rst b/Doc/library/othergui.rst
index ab4efdb..2d4ea37 100644
--- a/Doc/library/othergui.rst
+++ b/Doc/library/othergui.rst
@@ -69,10 +69,9 @@
       <http://www.amazon.com/exec/obidos/ASIN/1932394621>`_, by Noel Rappin and
       Robin Dunn.
 
-PyGTK, PyQt, and wxPython, all have a modern look and feel and far more
-widgets and better documentation than Tkinter. In addition,
-there are many other GUI toolkits for Python, both cross-platform, and
-platform-specific. See the `GUI Programming
+PyGTK, PyQt, and wxPython, all have a modern look and feel and more
+widgets than Tkinter. In addition, there are many other GUI toolkits for 
+Python, both cross-platform, and platform-specific. See the `GUI Programming
 <http://wiki.python.org/moin/GuiProgramming>`_ page in the Python Wiki for a
 much more complete list, and also for links to documents where the
 different GUI toolkits are compared.
diff --git a/Doc/library/rlcompleter.rst b/Doc/library/rlcompleter.rst
index cec1e86..01efb03 100644
--- a/Doc/library/rlcompleter.rst
+++ b/Doc/library/rlcompleter.rst
@@ -61,5 +61,6 @@
    If called for a dotted name, it will try to evaluate anything without obvious
    side-effects (functions will not be evaluated, but it can generate calls to
    :meth:`__getattr__`) up to the last part, and find matches for the rest via the
-   :func:`dir` function.
+   :func:`dir` function.  Any exception raised during the evaluation of the 
+   expression is caught, silenced and :const:`None` is returned.
 
diff --git a/Doc/library/tk.rst b/Doc/library/tk.rst
index 8451f6d..944687b 100644
--- a/Doc/library/tk.rst
+++ b/Doc/library/tk.rst
@@ -22,11 +22,12 @@
 mechanism which allows Python and Tcl to interact.
 
 :mod:`Tkinter`'s chief virtues are that it is fast, and that it usually comes
-bundled with Python. Although it has been used to create some very good
-applications, including IDLE, its standard documentation is weak (but there
-are some good books and tutorials), and it has an outdated look and
-feel. For more modern, better documented, and much more extensive GUI
-libraries, see the :ref:`other-gui-packages` section.
+bundled with Python. Although its standard documentation is weak, good 
+material is available, which includes: references, tutorials, a book and 
+others. :mod:`Tkinter` is also famous for having an outdated look and feel, 
+which has been vastly improved in Tk 8.5. Nevertheless, there are many other 
+GUI libraries that you could be interested in. For more information about 
+alternatives, see the :ref:`other-gui-packages` section.
 
 .. toctree::
    
diff --git a/Doc/library/zipimport.rst b/Doc/library/zipimport.rst
index 8972c06..82383bf 100644
--- a/Doc/library/zipimport.rst
+++ b/Doc/library/zipimport.rst
@@ -59,17 +59,14 @@
 
 .. class:: zipimporter(archivepath)
 
-   Create a new zipimporter instance. *archivepath* must be a path to a ZIP file.
+   Create a new zipimporter instance. *archivepath* must be a path to a ZIP
+   file, or to a specific path within a ZIP file.  For example, an *archivepath*
+   of :file:`foo/bar.zip/lib` will look for modules in the :file:`lib` directory
+   inside the ZIP file :file:`foo/bar.zip` (provided that it exists).
+
    :exc:`ZipImportError` is raised if *archivepath* doesn't point to a valid ZIP
    archive.
 
-   *archivepath* can also contain a path within the ZIP file -- the importer
-   object will then look under that path instead of the ZIP file root.  For
-   example, an *archivepath* of :file:`foo/bar.zip/lib` will look for modules
-   in the :file:`lib` directory inside the ZIP file :file:`foo/bar.zip`
-   (provided that it exists).
-
-
    .. method:: find_module(fullname[, path])
 
       Search for a module specified by *fullname*. *fullname* must be the fully
@@ -114,13 +111,19 @@
 
    .. attribute:: archive
 
-      The file name of the importer's associated ZIP file.
+      The file name of the importer's associated ZIP file, without a possible
+      subpath.
 
 
    .. attribute:: prefix
 
-      The path within the ZIP file where modules are searched; see
-      :class:`zipimporter` for details.
+      The subpath within the ZIP file where modules are searched.  This is the
+      empty string for zipimporter objects which point to the root of the ZIP
+      file.
+
+   The :attr:`archive` and :attr:`prefix` attributes, when combined with a
+   slash, equal the original *archivepath* argument given to the
+   :class:`zipimporter` constructor.
 
 
 .. _zipimport-examples: