Technically, you are right.
Practically, good luck positively locating yourself on the Class B chart for ATL. It's very... unique.
Once ATC vectors you into Class B anyway, they must let you know if they vector you out of Class B.
Pilot/Controller Glossary 101.
Wow. This thread is so dorky.
Where is a great place to get beer in ATL?
Thank you flylow!