span><span class="op">(</span><span class="st">"btn"</span>, <span class="st">"Click me"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="op">)</span>,</span></span>
<span class="r-in"><span>server <span class="op">=</span> <span class="kw">function</span><span class="op">(</span><span class="va">input</span>, <span class="va">output</span>, <span class="va">session</span><span class="op">)</span> <span class="op">{</span></span></span>
<span class="r-in"><span>  <span cla