OFF

#  the number of  vertices
8 

#  the number of faces
6 

#  the number of edges (not used in fact)
12 

#  the list of vertices 

     1 1 1 
     1 1 -1 
     1 -1 1 
     1 -1 -1 
     -1 1 1
     -1 1 -1
     -1 -1 1
     -1 -1 -1

#  the list of faces. each line has the following format:
#
#  the num. of vertices in the face, 
#
#  the list of the vertices in the face, in cyclic order, 
#  using the list of vertices above, numbered 0,1,2,....,7
#  
#  a the color specification of the face, using a 4-number code:
#  intensities of red,green and blue, and some "alpha" parameter

     4 0 2 3 1  0 0 1 # right face
     4 4 5 7 6   0 0 1  # left face
     4 0 4 6 2  .1 .4 .7 .75  # front face
     4 1 3 7 5  .1 .4 .7 .75  # back face
     4 0 1 5 4  .1 .4 .7 .75 # top face
     4 2 6 7 3   1 1 1 .75 # bottom face