r_part trail
{
texture "particles/quake"
step 3
scale 4
die 1.2
diesubrand 0.6
rampmode absolute
rampindex 109 1.0
rampindex 107 0.833
rampindex 6 0.667
rampindex 5 0.5
rampindex 4 0.333
rampindex 3 0.167
spawnorg 3
gravity -40
}