[Calling a card is the insisting of its being played when the suit comes round, or when it may be played.]
- If a player trump by mistake, he may recall his card, and play to the suit, if the card be not covered; but he may be compelled to play the highest or lowest of the suit led, and to play the exposed trump when it is called by his adversaries.
- If, before a trick be turned, a player discover that he has not followed suit, he may recall his card; but the card played in error can be called when the suit is played.
- Before a trick is turned, the player who made it may see the preceding trick.
[Only one trick is to be shown; not more, as is sometimes erroneously believed.]
- Before he plays, a player may require his partner to "draw his card," or he may have each card in the trick claimed before the trick be turned.
- When a player does not follow suit his partner is allowed to ask him whether he has any card of the suit led.
- The penalty for a revoke—either by wrongfully trumping the suit led, or by playing a card of another suit—is the loss of three tricks; but no revoke can be claimed till the cards are abandoned, and the trick turned.
[Revokes forfeit three tricks from the hand or score: or opponents may add three to their score; partner may ask and correct a trick if not turned; the revoking side cannot score out in that deal.]
- No revoke can be claimed after the tricks are gathered up, or after the cards are cut for the next deal.