Every time you tap the stock pile, 1 or 3 cards are dealt to the waste pile depending on the settings.
If Draw 3 option is chosen, three top cards are dealt, but only the top card is available to play.
If the card on top is played, the next card becomes available.
If the up-card cannot be used, the next group of three cards is turned up.
The number of passes through the stock pile is limited in Vegas Mode.