="op">=</span> <span class="fl">8</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="va">p2</span> <span class="op">&lt;-</span> <span class="fu"><a href="pipe_new.html">pipe_new</a></span><span class="op">(</span><span class="st">"pipe2"</span><span class="op">)</span></span></span>
<span class="r-in"><span><span class="fu"><a href="pipe_add.html">pipe_add</a></span><span class="op">(</span><span class="va">p1</span>, <span class="st">"square"</span>, \<span class="op">(</s