code/datums/components/chasm.dm

CHASM_REGISTER_SIGNALS	Doesn't drop the movable, but registers a few signals to try again if the conditions change.
/obj/effect/abstract/chasm_storage	An abstract object which is basically just a bag that the chasm puts people inside
/proc/get_chasm_category	Returns a key to store, remove and access fallen mobs depending on the z-level. This stops rescuing people from places that are waaaaaaaay too far-fetched.

Define Details

Doesn't drop the movable, but registers a few signals to try again if the conditions change.