From the NannyMUD documentation

LAST CHANGE

2001-01-12

FUNCTION

NAME
        ihelp_new_help_hook - A hook called when new info is added to ihelp.


AVAILABILITY
	/obj/ihelp

DESCRIPTION
	This hook is called when the player gives an ihelp-related
	command and the ihelp object needs to update its help.

	ARGUMENTS

	ihelp_new_help_hook(
	  ({ }),
	  The player's ihelp object.
	)


NOTE
	The ihelp object removes your hook after it has been called.