From the NannyMUD documentation

LAST CHANGE

2005-08-11

FUNCTION

NAME
        block_lossless_death_hook - 


LOCATION
	/obj/player (from /obj/hook)

AVAILABILITY
	This hook is generally available.

DESCRIPTION
	When a player is killed by another player, there is normally no loss
	of XP; stats, or level. Uisng this hook, and returning 1, will change
	that.

	ARGUMENTS

	block_lossless_death_hook (
	  ({ attacker_ob }),
	  the player
	)


SEE ALSO
        becomepk_hook in hooks/becomepk_hook