When a dragster does a burnout how do they back up to the starting line?

First of all, stop the car and position the shifter in reverse gear. Then press the transbrake button and the car will start to back up. Pay attention to your tracks and make sure you back up in them (its easy, they are easy to see). You back past the starting line and when the front of the car is about 6-10 feet behind the starting line release the transbrake button and shift the car into nuetral. Gently rev the engine to clear it out. Apply the brake and shift into 1st gear. Slowly proceed to the starting line. Thats about it and it isn't hard to do.