Use the Mask Display Order dialog box to change the display order of a selected render-only mask.
A mask with a higher display priority is drawn last and on top of any overlapping masks.
To change the display order of a render-only mask
- In Toolspace, on the Prospector tab, right-click the surface
Masks collection and click Display Order. The Mask Display Order dialog box is displayed.
- From the list, click a mask and click
to move the mask up in the list or click 
to move the mask down. The mask at the top of the list has the highest display priority and is drawn on top of any overlapping masks.
- Click OK to apply the changes and close the Mask Display Order dialog box.