The Segmentation test-protocol states, that the 'Update volumina' button should be activated after some clipping planes were added (and possibly modified).

This did not happen in my case:

1. load an image
2. create a segmentation ( Add tool on two distant slices, 3d interp )
   • accept the segmentation

3. Add a clipping plane and deform, rotate and translate it somehow
4. Add another clipping plane and modify

5. The button is still NOT active.