Not that most of us really care here, but if you're curious to have the whole bit explained, here it is:
On US spec cars the switch has several positions in two dimensions. We all know where off is. If you turn right one click, you get parking lights. Turn right two clicks and you get headlights. Now, pull out one click and you get front fogs. Pull out two clicks and you get front and rear fogs. To engage the parking feature (which will leave one side parking lamps on after the car is shut down) turn to the left one or two clicks as you simultaneously pull out. This will leave either the driver or passenger side parking lights on to mark your car on a dark road. Very used in Europe, but I have used it a few times here in the states when on a very dark, busy road.
Patrick