+++      +++   +++      S+H    ++   +++      M++   +++  ++P+   +++      ++     ++++ T    ++  H MB +++       +SH+             +++F+    ++++ ++  ++E++         ++  +++++

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)