A.Skybox B.SolidColor C.DepthOnly D.Background
A.Edit->RenderingSetting->DirectionalLight B.GameObject->CreateOther->DirectionalLight C.Component->Rendering->DirectionalLight D.Assets->DirectionalLight
A.Terrain->WindZone B.GameObject->CreateOther->WindZone C.Component->Physics->WindZone D.Assets->Create->WindZone