ght in pixels.</td>
                </tr>
                <tr>
                  <td>gui</td>
                  <td>auto</td>
                  <td>If set to 'true', the user interface will be included in the captured image.
                    If set to 'auto', the last value will be used.
                  </td>
                </tr>
                <tr>
                  <td>restoreState</td>
                  <td>false</td>
                  <td>If set to 'true', the window's size and the GUI visibility