In the html for net-send:
<a NAME="net-send"></a>
<h2><span class="function">net-send</span></h2>
<b>syntax: (net-send <em>int-socket</em> <em>str-buffer</em> [<em>int-num-bytes</em>])</b>
<p>
Sends the contents of <em>str-buffer</em> on the connection specified by <em>int-socket</em>.
If <em>int-num-bytes</em> is specified, up to <em>int-num-bytes</em> are sent.
If <em>int-num-bytes</em> is not specified, the entire contents will be sent.
<tt>net-send</tt> returns the number of bytes sent or <tt>nil</tt> on failure.
</p>
<tt>On failure use <a href="#net-error">net-error</a> to get more error information.</p>
<b>example:</b>
<blockquote>
<pre>
(set 'buf "hello there")
(net-send sock buf) <span class=arw>→</span> 11
(net-send sock buf 5) <span class=arw>→</span> 5
(net-send sock "bye bye") <span class=arw>→</span> 7
</pre>
</blockquote>
<p>
The first <tt>net-send</tt> sends the string <tt>"hello there"</tt>, while
the second <tt>net-send</tt> sends only the string <tt>"hello"</tt>.
</p>
<br /><br />
In the middle, notice that the use of <tt> is not closed.
Update] it looks better if you just take out the offending <tt>.