The Raise element is used to add a fixed thickness of material to an area of the site. This
      element is most commonly used for adding paving or topsoil. 
     The properties that are exposed for the Raise element are summarised below. 
    
        
           
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            - 
              Boundary
              
 Boundary button provides access to the editor whereby the definition points can be
                defined for the outline of the Raise area.  
             
            - 
              Height
              
 This is the height of material that you wish to add from the Raise area.  
             
            - Heights From
This setting dictates from what surface the specified heights
                are relative to. ‘Ground’ can be selected or you can select the ‘Previous Element’
                if you want the heights to be relative to the surface when the previous element in
                the calculation order is built. You can also select a named element. When the ‘Auto’
                option is active ‘Heights From’ is dynamically set to the first absolute element
                above it in the calculation order. If there aren’t any, it is set to ground. The
                behaviour when ‘Auto’ is active is desirable in most circumstances. 
 
            - 
              Side Batter
              
 The Raise boundary is joined to the ground by side slopes. The Side Batters (set as a ratio of vertical to horizontal)
                dictate the angle of these slopes. You can set the side batter to either External or
                Internal. Turning side batter off will result in the Raise being joined to the
                ground with vertical sides.  
 Between the Cut and Fill ratios is a double-arrow
              button which, when depressed, will synchronise Side Batters. 
           
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