are_elements.png</a>,
          a <a href = "../../data/png/png.html">PNG</a> image of
          the 32 elements;
        </li>
        <li>
          <a href = "square_elements.txt">square_elements.txt</a>,
          a text file containing a list, for each element, of the six
          nodes that compose it;
        </li>
        <li>
          <a href = "square_time.txt">square_time.txt</a>,
          a text file containing the solution times;
        </li>
        <li>
          <a href = "u0000.txt">u00