+++    ++     ++++++ ++++     ++++  +++   ++++++++F++    +++     ++HM++++B     ++P D     ++M+++PF ++     ++H++F++T  +++++       +S+ +B+++     +++    +++  E++      +++P+

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)