Patch #849595: Add socket.shutdown() constants.
diff --git a/Doc/lib/libsocket.tex b/Doc/lib/libsocket.tex
index de2f51d..09c4c8d 100644
--- a/Doc/lib/libsocket.tex
+++ b/Doc/lib/libsocket.tex
@@ -638,8 +638,8 @@
\begin{methoddesc}[socket]{shutdown}{how}
Shut down one or both halves of the connection. If \var{how} is
-\code{0}, further receives are disallowed. If \var{how} is \code{1},
-further sends are disallowed. If \var{how} is \code{2}, further sends
+\constant{SHUT_RD}, further receives are disallowed. If \var{how} is \constant{SHUT_WR},
+further sends are disallowed. If \var{how} is \constant{SHUT_RDWR}, further sends
and receives are disallowed.
\end{methoddesc}