OFF
#
#  octa.off
#  An octahedron.
#
6  8  12
  0.0  0.0  1.0
  1.0  0.0  0.0
  0.0  1.0  0.0
 -1.0  0.0  0.0
  0.0 -1.0  0.0
  0.0  0.0 -1.0
3  1 0 4  0.7 0 0
3  4 0 3  0.7 0 0
3  3 0 2  0.7 0 0
3  2 0 1  0.7 0 0 
3  1 5 2  0.7 0 0 
3  2 5 3  0.7 0 0
3  3 5 4  0.7 0 0
3  4 5 1  0.7 0 0
