This is the new location for markings-only textures.

RM = road marking
AR = asphaltroad
TX = taxiway

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notes:

RMg2 shouldn't be used
create it again but g4

g stands for gauge.
g2 = 1/2 lane width, g4 = 1/4 lane width

A lane is 5 metres and a 2 way road is 10m. It does not align with actual drivable road lanes.
