AW WORLD CLOUDS LAYER2 MASK
|Added in version 3.4|
Optional mask for the texture of cloud layer 2.
If the mask is the same as the texture name then it will be "self-masking": brighter areas nontransparent and darker ones see-through. Note that clouds are automatically transparent at the edges, and that fading rate cannot be changed with a mask.
"", null-string (no mask)