content: ' Channel entry point
  sub Main()
      ShowChannelRSGScreen()
  end sub
  
  sub ShowChannelRSGScreen()
      ' the roSGScreen object is a SceneGraph canvas that displays the contents of a Scene node instance
      screen = CreateObject("roSGScreen")
      ' message port is the place where events are sent
      m.port = CreateObject("roMessagePort")
      ' sets the message port which will be used for events from the screen
      screen.SetMessagePort(m.port)
      ' every screen object must have a scene node, or a node that derives from the scene node
      scene = screen.CreateScene("MainScene")
      ' Init method in MainScene.brs is invoked
      screen.Show() 
  
      while(true)
          ' wait for events from screen
          msg = wait(0, m.port)
          msgType = type(msg)
          if msgType = "roSGScreenEvent"
              if msg.IsScreenClosed() then return
          end if
      end while
  end sub