[wallflower]

Another thing that guide mentions is that if the nylon guideline is cut, it will rapidly snap and retract and spool up (kind of like a fishing line).

Also I read an accident report of some divers who survived a silt out condition, they spent a lot of time carefully figuring out what direction they should follow the rope out to exit the cave in places where it has been wrapped around a stone a few times to anchor it.