sun_vector [ 1.00 1.00 1.00 ]
sun_color [ 1.00 1.00 1.00 ]
ambient [ 0.50 0.50 0.75 ]
sky_n @SKETCHtrack/sky.png
sky_e @SKETCHtrack/sky.png
sky_env @SKETCHtrack/sky-env.png
sky_s @SKETCHtrack/sky.png
sky_u @SKETCHtrack/sky-up.png
sky_w @SKETCHtrack/sky.png