TM  P+  F+M+         B++++P+    +++++++  +++        +++++F+++P    +++ GP++++++++++   ++++S+  +++  ++++      +++++  E+++P+   +++H+P +P++ +++++      +B++ +++++++

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)