<tr>
            <td
 style="font-family: Courier New,Courier,monospace; font-weight: bold;">cell_type
            </td>
            <td>Voronoi cell type. </td>
          </tr>
          <tr>
            <td
 style="font-family: Courier New,Courier,monospace; font-weight: bold;">vertex_type
            </td>
            <td>Voronoi vertex type. </td>
          </tr>
          <tr>
            <td
 style="font-family: Courier New,Courier,monospace; font-weight: bold;">edge_type
            </td>
           