content: sub main()
      screen = createObject("roSGScreen")
      m.port = createObject("roMessagePort")
      screen.setMessagePort(m.port)
      m.global = screen.getGlobalNode()
      scene = screen.createScene("MainScene")
      screen.show()
      newLogger = createObject("roSGNode", "logger")
      m.global.addFields({newLogger: newLogger})
      ?m.global
      while(true)
          msg = wait(0, m.port)
          msgType = type(msg)
          if msgType = "roSGScreenEvent"
              if msg.isScreenClosed() then return
          end if
      end while
  end sub
  
  