Poker/Pot limit

A game played with a pot limit /Betting structure allows any player to /Raise up to an amount equal to the size of the whole pot before the raise.

For example, let's assume that there is $10 in the pot at the start of a betting round. The first player may /Open the betting for up to $10. If he does in fact open for $10, the next player may raise to $40 (after calling the $10 bet, the total amount of the pot is $30, so he may raise $30).