      If a broker feels that under the first procedure he will give away anexcessive portion of his cross, an alternative procedure can be used. Thebroker can inform the crowd that he will not give them stock at the cleanupprice. The broker then makes a public bid and offer on behalf of both sidesof the cross (with a minimum variation spread) and allows a reasonable timefor the crowd and the specialist to trade. After the crowd and specialisttrade, the crossing broker can cross the orders for the remaining shares atthe clean-up price. Even according to this procedure, however, the crossingbroker must fill all the limit orders in the book that are at the crossprice before retaining any stock for his own account.