      <td><p>optional string of markdown that will be shown in the viewer for additional context about the display</p></td>
    </tr>
    <tr>
      <th>state</th>
      <td><p>the initial state the display will open in</p></td>
    </tr>
    <tr>
      <th>jsonp</th>
      <td><p>should json for display object be jsonp (TRUE) or json (FALSE)?</p></td>
    </tr>
    <tr>
      <th>split_sig</th>
      <td><p>optional string "signature" specifying the data splitting</p></td>
    </tr>
    <tr>
      <th>pane