Map symbols

[DeltaXray]

Hello simmers,

I am new to Plan-G. I wondered if there is some kind legend for the symbols used on the map? I didn't find it in the manual.
What is the difference between the symbols used for airports: the black one, the red one and the open black one?

regards,
DX

[tim arnot]

Red = Military
Black = Civilian
Filled = Hard runway (tarmac, concrete etc)
Open = Soft runway (grass etc)
Anchor = Water
H = Heliport
X = Closed/Disused

ILS feathers:
Green = LOC+G/S
Red = LOC