eye 0 0 10
viewdir 0 0 -1
updir 0 1 0
hfov 60
imsize 512 512
bkgcolor 0.5 0.7 0.9 1
light 0 -1 0 0 1 1 1

mtlcolor 0.7 0.2 0.7 1 1 1 0 0.05 0.1 80 0.5 1.5
sphere 1 1 -6 3
sphere -1 -1 1 3