POKER RULES
A full description of the rules con be found as an option at the start of the
program.
The object of the game is to achieve a better poker hand (see below) than any of
your opponents in order to win a pot of money which accumulates during two
rounds of betting.
In between the two rounds of betting each player is given the opportunity to
improve his hand by exchanging up to four of his cards for new ones.
A round of betting is only over when all participating players have contributed
equal amounts to the pot. It is possible to scare off opponents who may have
better hands by bluffing on a poor hand.


Poker hands in order of priority:

1.    Straight flush. - Five consecutive cards of the same suit. e.g. 3.4,5,6,7
      of Clubs.
2.    Four of a kind. - Four cards of the same number. e.g. four Kings.
3.    Full House. - Three cards of one number and two cards of another. e.g.
      three 6's and two 9's.
4.    Rush. - Five cards of the same suit, not consecutive. e.g. 3,5,9,10 Queen
      of Hearts.
5.    Straight. - Five consecutive cards, not of the same suit. e.g. 2,3 of
      Hearts and 4,5,6 of Spades.
6.    Three of a kind. - Three cards of the same number. e.g. three 7's.
7.    Two pairs. - Two cards of one number and two cards of another number. e.g.
      two 4's and two 8's.
8.    Pair. - Two cards of the same number. e.g. two Aces.
9.    Card high. - Any hand not falling into the above categories, consisting of
      mixed unconnected cards.


The following rules apply where two competing hands fall into the same category
above:

1.    The highest card of a straight flush wins.
2.    The highest Four of a kind win.
3.    The highest three of a kind in a full house wins.
4.    The highest card in a flush wins. If these are the same then the second
      highest card wins etc.
5.    The highest card in a straight wins.
6.    The highest three of a kind wins.
7.    The highest pair of two pair wins. If these are the same, then the highest
      second pair wins. If these are the same then the highest remaining card
      wins.
8.    The highest pair wins. If these are the same, then the highest remaining
      card wins etc.
9.    The highest card wins. If these are the same, then the highest second card
      wins etc.

Note: Aces count high, but can be used high or low in a straight.