Add some more items
diff --git a/Doc/whatsnew/whatsnew23.tex b/Doc/whatsnew/whatsnew23.tex
index fcb1a1d..52b500c 100644
--- a/Doc/whatsnew/whatsnew23.tex
+++ b/Doc/whatsnew/whatsnew23.tex
@@ -1085,11 +1085,17 @@
\item Built-in types now support the extended slicing syntax,
as described in section~\ref{section-slices} of this document.
+\item A new built-in function, \function{sum(\var{iterable}, \var{start}=0)},
+adds up the numeric items in the iterable object and returns their sum.
+\function{sum()} only accepts numbers, meaning that you can't use it
+to concatenate a bunch of strings, for example. (Contributed by Alex
+Martelli.)
+
\item Dictionaries have a new method, \method{pop(\var{key}\optional{,
\var{default}})}, that returns the value corresponding to \var{key}
and removes that key/value pair from the dictionary. If the requested
-key isn't present in the dictionary, \var{default} is returned if
-it's specified and \exception{KeyError} raised if it isn't.
+key isn't present in the dictionary, \var{default} is returned if it's
+specified and \exception{KeyError} raised if it isn't.
\begin{verbatim}
>>> d = {1:2}
@@ -1397,6 +1403,9 @@
them to override the settings in Python's configuration (contributed
by Robert Weber).
+\item The new \function{gc.get_referents(\var{object})} function returns a
+list of all the objects referenced by \var{object}.
+
\item The \module{getopt} module gained a new function,
\function{gnu_getopt()}, that supports the same arguments as the existing
\function{getopt()} function but uses GNU-style scanning mode.
@@ -1524,6 +1533,12 @@
tidied and brought up to date in various ways. (Contributed by Greg
Ward and Nicholas FitzRoy-Dale.)
+\item The new \module{platform} module contains a number of functions
+that try to determine various properties of the platform you're
+running on. There are functions for getting the architecture, CPU
+type, the Windows OS version, and even the Linux distribution version.
+(Contributed by Marc-Andr\'e Lemburg.)
+
\item The parser objects provided by the \module{pyexpat} module
can now optionally buffer character data, resulting in fewer calls to
your character data handler and therefore faster performance. Setting
@@ -1576,7 +1591,7 @@
(Sticking with Python 2.2 or 2.1 will not make your applications any
safer because there are known bugs in the \module{rexec} module in
-those versions. I repeat, if you're using \module{rexec}, stop using
+those versions. To repeat: if you're using \module{rexec}, stop using
it immediately.)
\item The \module{rotor} module has been deprecated because the