I notice in some areas (controlled zones?) the environment is automatically revealed even if you haven't seen it before.
I also noticed that there are areas in these zones (new areas I'm pretty sure) that are not auto-revealed.
Two examples of this that I've found are the workout room across from Doctor Pasquale's office and what looks to be a conference room accessible from Vera Hale's office.
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I forgot about Quinton's lab, that's another one.
Arlene's Kitchen and a nearby locker.
