A led screen is a LED simulation and can be used to simulate pitch / luminosity : 
                     
                    
                    
                            Do not forget to assign a content map to this element if you want it to display anything : 
                    
 
                    
                    
                            A led screen will by default adapt to the content map resolution. 
                            An imported geometry can be set up as a 
                    Free Shape Led Screen
                    Turn any Smode primitive into a LED screen
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                     but in this case the pitch won't be simulated.
                            A led screen automatically take the resolution of it's 
                    Content Map
                    This section describes how to set up your content maps and use Content Area
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                     inside of the stage simulation. It's size is then automatically calculated accordingly to his pitch.
                    
                    Strip Led Screen
                    
        Has the same behavior as Led Screen but got only a length and a pitch
      
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                     and 
                    Tiles Led Screen
                    
        Is a Led Screen with tiles options
      
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                     are also 2 variations of Smode led screens.