entify coincident nodes from different pieces (not yet implemented).</td>
            </tr>
          </tbody>
        </table>
      </div>
      </p>
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      </div>

    <h2 id="meshconv"><input type="button" onclick="return toggleMe(this,'div3')" class="btn" value="-"/> 3. Mesh conversion options</h2>

      <div id="div3">
      <p>
      <div align="left">
        <table class="tb" width="80%">
          <thead>
            <tr> <th width="30%"