The request
You send a name, an email, a hall, and a question. If a time is open, the reply comes by email and tells you the next step.
Terms
What a message is.
The halls
The guide describes Austin, Irvine, Atlanta, and Chicago: the straight, the hairpins, the pit, and the briefing.
The hall's rules
Closed shoes, long pants, the briefing, and the brake point are how the visit works. The hall you stand in can add its own rule on the day. The guide does not override that.
The writing
Notes about straights and hairpins come from visits. They are a description, not a promise of a lap.