content: ' ********** Copyright 2018 Roku, Inc.  All Rights Reserved. ********** 
  function Main()
      screen = createObject("roSGScreen")
      m.port = createObject("roMessagePort")
      screen.setMessagePort(m.port)
      m.scene = screen.createScene("MainScene")
      screen.show()
  
      while(true)
          msg = wait(0, m.port)
          msgType = type(msg)
          if msgType = "roSGScreenEvent"
              if msg.isScreenClosed() then return true
          end if
      end while
  end function
  