This Agreement contains all of the agreements of the parties hereto with respect to the subject matter hereof and no prior agreement, understanding, or representation pertaining to any such matter shall be effective for any purpose. No provision of this Agreement may be amended except by an express agreement in writing signed by the parties hereto or their respective successors in interest. Except as is expressly modified or amended herein, the provisions, conditions and terms of the Lease shall remain unchanged and in full force and effect.