Here you can select between 8 textures to paint on the terrain ground.

It's important to keep in mind that these textures are in numbered layers.

So the bottom texture in the list will always end up under the textures above.

The tile builder is designed to only be able to have 3 textures painted on

each other, excluding the base grass texture. More textures than 3 in the

same place will create artifacts. This restriction is due to optimization.

Brush

The brush window lets you set the Strength of your brush as well as size and

falloff.

Asset Library

Here is where you select the texture you want to use when painting

the terrain.