eye 0 0 4
look 0 0 0
up 0 1 0
fov 60
la 1 1 1
ld 1 1 1 -1 -1 -1
surf 0.8 0.2 0.9 0.5 0.5 0.0 1.0
v  1  1  1
v -1  1  1
v -1 -1  1
v  1 -1  1
v  1 -1 -1
v -1 -1 -1
v -1  1 -1
v  1  1 -1
v -1 -1 1.5
v  1 -1 1.5
v  1  1 1.5
v -1  1 1.5
texture checker.gif
tf 0 1 0  1 0 0  2 0 1  3 1 1
f 4 5 6 7
f 7 6 1 0
f 5 4 3 2
f 0 3 4 7
f 6 5 2 1