Locations

Test Subject Area[TSA]
A Test Subject spawn. Includes a TS cafeteria, Chill Market, Sewers Entrance.

Safe Containment Zone[SaCZ]
A Containment Zone on first floor of facility. Contains 2 CICs: 013 and 023.

Standard Containment Zone[StCZ]
Biggest Containment Zone which is also known as Main Hall. Contains CIC-001, 008, 019, 012, 017, 003, 016, 009, 015, 006, 011, 004, 010, 018. Also connects all main locations like Staff Lounge, TSA, Personnel Area.

Special Containment Zone[SpCZ]
Contains 3 most overpowered CICs: 005, 002 and 007.

Surface
The surface. The place where DOC, CR, CI and ETF spawn.

Cafeteria
A cafeteria on first floor of facility (Not TS cafeteria).

Vents
Vents can be accessed by crowbar and lets you travel to any of main locations like Main Hall, Medical Bay, Generator Room and Surface.

Personnel Area
An area which includes Ethics Committee, SD, MD, ScD spawns, Check It Store, External Affairs area and Computers Room.

Staff Lounge
A small area which can be used as shortcut to main hall. It has Breach Shelter in it.

Redux:

Test Subject Area [TSA]

who knows???