Template:P27t

From Simplex

PRINCIPLE 27: Simplex is designed so that, as far as possible, responses follow the same guidelines as openings and overcalls. For example, the requirements of a suit-change response at the 1-level are identical to those of an opening bid of one of a suit. And a Simplex 2NT rebid by opener has the same requirements as a Simplex 2NT bid by responder.