modem

rednet.open("left")

while true do
  id,message = rednet.receive()
  if id == 4 then
    if message == "left" then
      turtle.turnLeft()
    end
    if message == "right" then
      turtle.turnRight
    end
    if message == "up" then
      turtle.up()
    end
    if message == "down" then
      turtle.down()
    end
    if message == "forward" then
      turtle.forward()
    end
    if message == "back" then
      turtle.back()
    end
    if message == "place" then
      turtle.placeDown()
    end
    if message == "dig" then
      turtle.dig()
    end
  end
end