g structures. Additionally, you can tell SNAP to apply manual and automatic segmentation only to voxels with labels that are not hidden. Thus, by hiding a label, it is possible to prevent various segmentation operations from affecting it. </p>     </td>
   </tr>
 </table>
 <br>
 <hr>
 <h3>Step 3. Load Labels from a File</h3>
 <p>If you have downloaded an image archive, as recommended in <a href="TutorialSectionLoadingImages.html#Download">Section 2, Step 1</a>, then you can load a set of segmentation labels