span class="mi">2</span><span class="p">).</span><span class="n">eq</span><span class="p">.</span><span class="s1">&#39;FO&#39;</span><span class="p">)</span> <span class="k">then</span>

<span class="k">       call </span><span class="n">cart_to_tor_check_if_confined</span><span class="p">(</span><span class="n">vars</span><span class="p">%</span><span class="n">X</span><span class="p">,</span><span class="n">F</span><span class="p">,</span><span class="n">vars</span><span class="p">%</span><span class="n"