ied to all the shapes. Default 255. If a hex-string is used as the
colour, this argument is ignored and you should include the alpha on the hex string</p></td>
    </tr>
    <tr>
      <th>tooltip</th>
      <td><p>variable of <code>data</code> containing text or HTML to render as a tooltip</p></td>
    </tr>
    <tr>
      <th>auto_highlight</th>
      <td><p>logical indicating if the shape under the mouse should auto-highlight</p></td>
    </tr>
    <tr>
      <th>highlight_colour</th>
      <td><p>hex st