Added [nh]to[hn][sl]().
diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex
index 9b3c228..b105b22 100644
--- a/Doc/lib/libsocket.tex
+++ b/Doc/lib/libsocket.tex
@@ -133,6 +133,17 @@
daemon).
\end{funcdesc}
+\begin{funcdesc}{ntohl}{x}
+\funcline{ntohs}{x}
+\funcline{htonl}{x}
+\funcline{htons}{x}
+These functions convert 32-bit (`l' suffix) and 16-bit (`s' suffix)
+integers between network and host byte order. On machines where the
+host byte order is the same as the network byte order, they are no-ops
+(assuming the values fit in the indicated size); otherwise, they
+perform 2-byte or 4-byte swap operations.
+\end{funcdesc}
+
\subsection{Socket Objects}
\noindent