[6S.Maraz]

1.
The distant views on my maps are not displaying correctly.
The sea is white in the distance, and the corresponding land areas are mottled grey, with no colour displaying. -- Is this a map_F issue?

Yes it should be that. But to be sure of how the distant view will be, you should test it in game, not in the FMB.

2.
What does map_r do? I haven't made one yet.
Does it use 200m pixels?
Any idea what it looks like.

3.
What is map_M for?

map_r should be for reflectivity, no idea about map_M, but not all maps have these files so they should not be very important. My Malta map looks good without them

Maraz