when we finally made it through inspection our buddies waited at the tent to get their wristbands fixed so we parked right infront of the inspection tents with an "O" on our windshield. So our friends caught up with us and a got back in the car maybe 3 minutes later so we pulled out of the spot and started to head towards the camping spots and some guy stopped us and told us we were going to have to get inspected again for the "X" in the circle and after some really pissed off and tired yelled he drew one on and let us go. wtf? can anyone explain what those meant? and if there was even a difference?