This means that the game uses the smaller of the two amounts as the betting level for the preflop betting round and the flop betting round, and the second of the two amounts as the limit for the turn and the river betting rounds.
The most common form of limit hold 'em is a two-tiered betting structure, usually expressed as two amounts with a slash between them (e.g. The limit structure imposes exact bet sizes for each of the four betting rounds in Hold 'em. Limit hold'em is the most popular ring game structure found in live cardrooms, and is about equal in popularity to no-limit hold 'em online. Hold'em comes in four betting structures: limit, no-limit, pot-limit and spread-limit. Texas hold'em is easily the most popular poker game played in card rooms in the United States.
