This Agreement is and shall be considered to be the only agreement or understanding between the parties hereto with respect to the employment of the Executive by the Company.  All negotiations, commitments, and understandings acceptable to both parties have been incorporated herein.  No letter, telegram, or communication passing between the parties hereto covering any matter during this contract period, or any plans or periods thereafter, shall be deemed a part of this Agreement; nor shall it have the effect of modifying or adding to this Agreement unless it is distinctly stated in such letter, telegram, or communication that is to constitute a part of this Agreement and is attached as an amendment to this Agreement and is signed by the parties to this Agreement.