<Entity name="SurfaceMaterial" source="Referenced">
	<Attribute.Scalar name="roughness" type="Real"/>
	<Attribute.Scalar name="adhesion" type="Real"/>
	<Attribute.Scalar name="adhesiveOverlap" type="Real"/>
	<Attribute.Scalar name="viscosity" type="Real"/>
	<Attribute.Scalar name="frictionEnabled" type="Bool" value="true"/>
	<Attribute.Scalar name="dirty" type="Bool"/>
  <!-- <Attribute.Scalar name="contactReduction" type="Bool" value="false"/> -->
</Entity>
