In Hold 'em and Omaha games, the big bet is usually twice the size of the small bet, though in other variants such as 7-Stud, it may be more. A game where the small bet is 20 and the big bet is 40 is written as '20/40'. For instance, a game where the small bet is $2 and the big bet is $4 would be called a '2/4' game. Such games are usually written as having limits of 'small-slash-big'. Most commonly, fixed-limit games have two bet sizes, called the small bet and the big bet. This is in contrast to pot-limit and no-limit betting. Fixed-limit (also called just Limit) is a type of betting structure for a poker game where the amount of all bets and raises in any given betting round is fixed.