Surface Menu
    The Surface Menu allows one to find information
      and set parameters for surfaces viewed in Workbench.
    
      - Information... will open a popup
          that shows geometric information on the surface being viewed
          in the current Active
                Tab. If the active tab does not contain a
          surface, this option is inactive. 
      - Surface Properties sets display
          options for all surfaces across a Workbench session. 
      
        - Display Normal Vectors sets
            whether vectors at 90 degrees to the surface will be shown
            for each vertex. 
    
      
        - Drawing Type sets how the
            surface mesh is drawn in wb_view. 
        
          -  Hide hides the surface and
              all layers drawn on it.
 
- Links (Edges)
              shows the links between surface vertices giving a mesh
              appearance.
 
- Vertices shows only the vertex
              points across the surface.
 
- Triangles shows the
              full surface (mesh filled in with interpolated information
              between the vertices). 
    
      
        - Link Diameter sets the diameter
            of the links when in Links (Edges) drawing mode. 
    
      
        - Vertex diameter sets the
            diameter of vertices when in Vertices drawing mode.
        - Opacity sets the opacity of the
            surface when in Triangles drawing mode. Opacity in the Overlay
                  Toolbox sets layer opacity.
 
      
        
      
        - Volume interaction sets the
            surface used for mapping to volume voxels. This is used in
            the Volume/Surface Outline feature and for volume to vertex
            identification.  
 
        