bpy.types.Mesh.smoothing = bpy.props.EnumProperty(name="Smoothing", description="Smoothing method to use", default="MSPGL",
items=(("NONE", "None", "No smoothing"),
("BLENDER", "Blender", "Use Blender's vertex normals"),
bpy.types.Mesh.smoothing = bpy.props.EnumProperty(name="Smoothing", description="Smoothing method to use", default="MSPGL",
items=(("NONE", "None", "No smoothing"),
("BLENDER", "Blender", "Use Blender's vertex normals"),