In Action, shadows are not cast by lit objects;
            shadows are cutouts based on a surface's matte. This type of shadow
            is referred to as a drop shadow. A drop shadow can
            be fully opaque or slightly transparent to simulate a real shadow.
         
         To add a drop shadow:
         
         
            - Select the surface that you want to use.
            
- Do one of the following:
               
                  - Drag the shadow node from the node bar
                     and place it in the schematic. An axis and a shadow are created
                     and linked together.
                  
- Drag the shadow node from the node bar
                     to the Result view, so you can see its effect on the scene before
                     placing it exactly where you want.
                  
- Double-click the shadow node. An axis
                     and a shadow are created and linked together. You do not need to
                     be in Schematic view to add a node in this manner.
                  
 If a surface node is
                  selected in the schematic, the axis of the shadow node is automatically
                  connected to the surface.