<xs:simpleType name="TextureTypeType">
	<xs:annotation>
		<xs:documentation>Textures can be qualified by the attribute textureType. The textureType differentiates between textures,
			which are specific for a certain object and are only used for that object (specific), and prototypic textures being
			typical for that kind of object and are used many times for all objects of that kind (typical). A typical texture may be
			replaced by a specific, if available. Textures may also be classified as unknown. </xs:documentation>
	</xs:annotation>
	<xs:restriction base="xs:string">
		<xs:enumeration value="specific"/>
		<xs:enumeration value="typical"/>
		<xs:enumeration value="unknown"/>
	</xs:restriction>
</xs:simpleType>