Updated the socketpair() docstring and documentation to explain that the
default famility is AF_UNIX if defined for the platform, otherwise the
default is AF_INET.
diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex
index 73590b4..762d762 100644
--- a/Doc/lib/libsocket.tex
+++ b/Doc/lib/libsocket.tex
@@ -307,8 +307,9 @@
Build a pair of connected socket objects using the given address
family, socket type and protocol number. Address family, socket type
and protocol number are as for the \function{socket()} function above.
-Availability: \UNIX.
-\versionadded{2.4}
+The default family is AF_UNIX if defined for the platform, otherwise
+the default is AF_INET.
+Availability: \UNIX. \versionadded{2.4}
\end{funcdesc}
\begin{funcdesc}{fromfd}{fd, family, type\optional{, proto}}