Used to find a 4/4 minor suit fit after a 1NT opening bid. Created by L. Allen. After a Stayman 2C response, and opener's major-suit rebid, a bid in teheother major asks opener to show a 4-card minor suit.
A bidding convention is an agreement between two players on a different meaning of a bid in the card game bridge. These agreements are made so that partners can more quickly determine which contract, with both their cards, they can win together. Often, conventions are forged together into one, which is then called a bidding system.