 that we segment. The 'draw over all labels' settings means that segmentation will override all labels that have already been assigned to voxels.</p>
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     <td width="36" valign="top"><img src="Artwork/ttIconAction.gif" width="36" height="36"></td>
     <td><p>Enter the <a href="TutorialSectionViewingImages.html#Crosshairs">crosshairs mode</a>. </p>
       <p>Position the crosshairs in such a way that the right caudate nu