add descriptions of {get,set}defaulttimeout.
diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex
index 5ca0afc..4febf22 100644
--- a/Doc/lib/libsocket.tex
+++ b/Doc/lib/libsocket.tex
@@ -349,6 +349,20 @@
support.
\end{funcdesc}
+\begin{funcdesc}{getdefaulttimeout}{}
+Return the default timeout in floating seconds for new socket objects.
+A value of \code{None} indicates that new socket objects have no timeout.
+When the socket module is first imported, the default is \code{None}.
+\versionadded{2.3}
+\end{funcdesc}
+
+\begin{funcdesc}{setdefaulttimeout}{timeout}
+Set the default timeout in floating seconds for new socket objects.
+A value of \code{None} indicates that new socket objects have no timeout.
+When the socket module is first imported, the default is \code{None}.
+\versionadded{2.3}
+\end{funcdesc}
+
\begin{datadesc}{SocketType}
This is a Python type object that represents the socket object type.
It is the same as \code{type(socket(...))}.