 the polygon are assigned the currently selected segmentation label.</p>
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     <td width="36" valign="top"><img src="Artwork/ttIconTip.gif" width="36" height="36"></td>
     <td><p>If you are not satisfied with your result and want to erase it, you can do so by changing the active drawing label to the <strong>'Clear'</strong> label, and painting a polygon on top of the part of the segmentation that you want to erase. When