VW have all 3, you have coil live, x-over live and cranking
coil live is also known as terminal 15, x-over terminal X and cranking as terminal 50. the ign switch has these pins labled as such too handily for you
The x-over feed is fed from relay 18, it kills popwer to this circuit while cranking over. This means high powere items such as lights, wipers, blower fan etc will be switched off while cranking so maximum power goes to the starter motor.
Though I suppose accessory could also refer to pin SU on the ign switch, thats what powers the radio. This pin is live whenever the key is inserted into the ignition switch