This Agreement and the rights, remedies and obligations contained in any provision hereof, may be modified or waived only in accordance with this Section 18. No waiver by either party of any breach by the other or any provision hereof shall be deemed to be a waiver of any later or other breach thereof or as a waiver of any other provision of this Agreement.  This Agreement and its terms may not be waived, changed, discharged or terminated orally or by any course of dealing between the parties, but only by a written instrument signed by the party against whom any waiver, change, discharge or termination is sought.  No modification or waiver by the Bank is effective without written consent of the Board.