\setlength{\unitlength}{0.11mm}
\begin{picture}(500,340)(-360,460)
\put(-220,580){\line(0,-1){40}}
\put(-180,740){\small\sf CHANNEL}
\put(-180,660){\small\sf SOCKET}
\put(-320,580){\small\sf DATAGRAM}
\put(-280,500){\small\sf DGRAM}
\put(-60,580){\small\sf STREAM}
\put(-80,500){\small\sf MSTREAM}
\put(-100,740){\line(0,-1){40}}
\put(-100,660){\line(-2,-1){80}}
\put(-100,660){\line(2,-1){80}}
\put(20,580){\line(0,-1){40}}
\end{picture}
