<code><a href='console_callback.html'>console_callback</a></code>, <code><a href='custom_callback.html'>custom_callback</a></code></p></td>
    </tr>
    <tr>
      <th>ref_layer</th>
      <td><p>name of the layer that the callback should be applied to</p></td>
    </tr>
    <tr>
      <th>line_color, line_alpha, fill_color, fill_alpha, line_width, line_dash, level</th>
      <td><p>parameters to control the look of the selection bounding region</p></td>
    </tr>
    </table>

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