group_start 0 type 1 density 0.500000 linear 0.00000 200.000 color 1.90000 1.90000 2.20000 1.00000 group_end 0 group_start 1 type 1 density 0.00000 linear -2.50000 1.00000 color 0.700000 0.900000 1.00000 1.00000 group_end 1 group_start 2 type 1 density 1.00000 linear -100.000 16.0000 color 4.41000 1.00000 1.00000 0.00000 group_end 2 EOF