startup

input = "back"
output = "top"

while true do
  os.pullEvent()
  if rs.testBundledInput(input, colours.orange) then

  print(rs.getBundledOutput(output))

    if rs.getBundledOutput(output) == 3 then
      rs.setBundledOutput(output, 0)

      print("off")
    else
      rs.setBundledOutput(output, colours.lightBlue)

      print("on")
    end
  end
end