This Agreement constitutes the entire agreement of the parties with regard to the subject matter hereof, and contains all the covenants, promises, representations, warranties, and agreements between the parties with respect to employment of Executive by Company. Without limiting the scope of the preceding sentence, all prior understandings and agreements among the parties hereto relating to the subject matter hereof are hereby null and void and of no further force and effect. Any modification of this Agreement will be effective only if it is in writing and signed by the party to be charged.