+  + + MT          D +++ + + +    +E+++++ +++++++    B+++FP+++P+F++++      +++F++B++++++    +++P+++++F++S++P     +++++H+++++PH+

D - Depot. (place to repair ship, refuel ship, and buy extra fuel)
E - Exchange (place to buy goods)
B - Bank
F - Bar (food, beer, buy/sell)
S - System Parts
G - Guns Shields and Rapidheals
H - Hotel
M - Public Teleport (within city)
T - Tube Station (city to city)
P - Secure Parking lot
+ - Building (does nothing)