From the NannyMUD documentation

LAST CHANGE

2000-12-11

FUNCTION

NAME
        this_interactive - give the true current command giver


SYNTAX
	object this_interactive()

DESCRIPTION
	This function returns the true current command giver, which is
	always either 0 or an interactive object.  You can usually rely
	on this being the true player behind any action.  The main use
	of this is for security purposes.  Note that this_interactive()
	becomes 0 after a call-out.


SEE ALSO
        write in efun/object_related/write


SEE ALSO
        add_action in efun/object_related/add_action


SEE ALSO
        move_object in efun/object_related/move_object


SEE ALSO
        this_player in efun/object_related/this_player