This Agreement (including the Schedules and Exhibits hereto) constitutes the entire agreement of the parties hereto and supersedes any and all prior or contemporaneous agreements, written or oral, as to the matters contained herein, and no modification or waiver of any provision hereof or any of the Program Agreements, nor consent to the departure by Seller therefrom, shall be effective unless the same is in writing, and then such waiver or consent shall be effective only in the specific instance, and for the purpose, for which it is given.