The room handler is for handling the exit types. IN the add_exit (when
you add an exit to a room) the third paramater is a string like door or
something. This is the object that is queryed for what this means.
int add_exit_type(string type, mixed message, mixed obvious, int size,
mixed func)
Adds a new exit type to the eixt type list.
int remove_exit_type(string type)
Returns 1 if the exit type exists.
mixed *query_exit_type(string type)
Returns the array used by the room for the add_exit.