 <a href = "elbow_elements.txt">elbow_elements.txt</a>,
          the triangles.
        </li>
        <li>
          <a href = "elbow_output.txt">elbow_output.txt</a>,
          the printed output from a run of the sample program.
        </li>
        <li>
          <a href = "elbow_boundary_edges.txt">
          elbow_boundary_edges.txt</a>,
          the boundary edge file.
        </li>
      </ul>
    </p>

    <p>
      <b>ELL</b> is an L-shaped region, using 96 triangles and 65 nodes.
      It is tr