This Agreement, all Schedules and Exhibits hereto, and all agreements and instruments to be delivered by the parties pursuant hereto represent the entire understanding and agreement between the parties with respect to the subject matter hereof and supersede all prior oral and written and all contemporaneous oral negotiations, commitments and understandings between such parties. The Buyer, by the consent of its Directors or officers, and the Seller may amend or modify this Agreement, in such manner as may be agreed upon, by a written instrument executed by the Buyer and the Seller.