# Apple ModelIO OBJ File: plane
mtllib plane.mtl
g 
v -1 0 1
v 1 0 1
v 1 0 -1
v -1 0 -1
vn 0 1 0
vt 0.0001 0.9999
vt 0.9999 0.9999
vt 0.9999 0.000100017
vt 0.0001 0.000100017
usemtl material_1
f 1/1/1 2/2/1 3/3/1 4/4/1 
s off