From the NannyMUD documentation

LAST CHANGE

2001-08-12

FUNCTION

NAME
        changed_money_hook - 


AVAILABILITY
	/obj/player

DESCRIPTION
	THis function is called whenever a players money is changed.

	ARGUMENTS

	changed_money_hook(
	  ({ Money,
	     Old money,
	     The change,
	  }),
	  the player
	)


SEE ALSO
        block_changed_money_hook in hooks/block_changed_money_hook