# The soot field's true-calm lane (the FIRE_FIXTURE driver): zero wind,
# so the plume is the pure convection column - the reference the wind
# lanes bend away from. The flame-coverage probes (soot.flame /
# soot.flame_ring) must stay clean: smoke emerges from the flame tip,
# it never sits in the flame body or pools around the sprite.
# weather: wind 0 25
# frames: 1560
