This Agreement contains and constitutes the entire understanding and agreement between the Parties hereto respecting the subject matter hereof, and supersedes and cancels all previous negotiations, agreements, representations and writings in connection herewith.  This Agreement may not be released, discharged, abandoned, supplemented, modified or waived, in whole or in part, in any manner, orally or otherwise, except by a writing of concurrent or subsequent date signed and delivered by a duly authorized officer or representative of each of the Parties hereto making specific reference to this Agreement and the provisions hereof being released, discharged, abandoned, supplemented, modified or waived.