camera 20 80 300  0 40 0
size 3
sphere 1000  0 -1000 0  0 0 0     0.75 0.75 0.75  0
sphere 15    0 30 0     0 0 0     0.9 0.9 0.9     2
sphere 15     0 100 0     15 15 15  0 0 0           0