  <td width="36" valign="top"><img src="Artwork/ttIconAction.gif" width="36" height="36"></td>
     <td><p>Click the <strong>right</strong> mouse button to close the polygon (i.e., to connect the first an the last vertices).</p>
     </td>
   </tr>
 </table>
 <p align="center"><img src="Artwork/ttManualSegmentPaintClosePath.gif" width="218" height="213"></p>
 <p align="left">The green rectangle around the polygon indicates that all of the vertices are currently <em>selected.</em> Selected vertices can be mo