c1"># Open stdin stream</span>
<span class="n">stdout</span><span class="o">=</span><span class="n">Stream</span><span class="p">(</span><span class="s1">&#39;stdout&#39;</span><span class="p">)</span>               <span class="c1"># Open stdout stream</span>
<span class="n">A_var</span><span class="o">=</span><span class="n">Var</span><span class="p">()</span>                           <span class="c1"># Variable where to store the input term.</span>
<span class="n">Compound</span> <span class="p">(</span