Show One Show All, In Poker

Show one show all.  Players are entitled to receive equal access to information about the contents of another player's hand.   After a deal if cards are shown to another player, every player at the table has the right to see those cards.  During a deal, cards that were shown to an active player who might have a further wagering decision on that betting round must immediately be shown to all other players.

If the player who saw the card is not involved in the deal, or cannot use the information in wagering, the information should be withheld until the betting is over, so that it does not affect the normal outcome of the deal. Cards shown to a person who has no more wagering decisions on that betting round, but might use the information on a later betting round, should be shown to the other players at the conclusion of that betting round. If a player shows only some of his hole cards, he may be required to show all whole cards upon request.