group_start 0 type 1 density 0.600000 linear -0.300000 430.000 color 3.00000 2.80000 2.50000 1.00000 group_end 0 group_start 1 type 1 density 0.00000 linear 0.00000 10.0000 color 1.00000 1.00000 1.00000 1.00000 group_end 1 group_start 2 type 0 density 0.00000 linear 20.0000 1000.00 color 1.00000 1.00000 1.00000 0.00000 group_end 2 EOF