Players who join the game must make a bet before the card is dealt. Once the card is seen, the player usually has two choices: fold or play. Folding means that the player gives up and loses the bet. Play means that the player makes a second bet in the "play" diamond, which is exactly equal to the bet.
The bet on the 6-card bonus is an interesting proposition for players who use three-card poker to test waters before the Texas Hold'em tournament. The bonus is based on the best of the six cards that the dealer and player teamed up to play.