HIGH-ORDER (pass it as IBroadcast.BROADCAST_FILTER_OTHERS(user-or-sequence))
        Criteria to broadcast to every user but the current(s).

def BROADCAST_FILTER_OTHERS(user):
        """
        HIGH-ORDER (pass it as IBroadcast.BROADCAST_FILTER_OTHERS(user-or-sequence))
        Criteria to broadcast to every user but the current(s).
        """
        if not isinstance(user, (set,frozenset,list,tuple)):
            user = (user,)
        return lambda u, command, *args, **kwargs: u not in user