How is the pot calculated in a pot-limit game?

[moneyspinner]

In a pot-limit game, a person may bet or raise up to the amount in the pot. During a normal betting round, the pot amount is simply the amount of money currently in the pot.

However, when someone has made a bet in a round, the maximum amount you can raise is equal to: the amount in the pot + the amount bet in the round + the amount you have to call. For example, let's say the pot is $10 and someone bets $5. You want to raise the maximum amount possible. In this case, you can raise up to $20 ($10 + $5 +$5), making your total bet $25.