They write down your car number for the event you are in, unlike circle tracks most drag track cars don't get to run a certain number, the number is assigned by the track crew. Other than that I'm not sure what else is written. Could be your vehicles weight if there are weight restrictions at your track.
July, 9, 2012 AT 6:50 AM
Forgot they also write down your dial-in numbers which is what your car should be capable of running.