Surface Library
A visual list of all the surfaces in the current project.
Name
The name of the surface.
Type
What type of material does the surface use? A standard Unity material or a procedural Substance material.
Texture is Tiled
Is the surface tiled or should it be clamped on the edges?
Repeat X/Y
The number of repeats that the texture to render for an untiled surface.
Texture Unit Size
The size that this surface represents in world units.