1. The players will be alerted as to whether the joker is in use.
2. The joker may be used only as an ace, or to complete a straight, flush, or straight flush. (Thus it is not a completely wild card.)
3. If the joker is used to make a flush, it will be the highest card of the flush not present in the hand.
4. Five aces is the best possible hand (four aces and joker).