This Agreement, together with the Equity Plan, Option   Agreement, the Confidential Information Agreement (and its exhibits), lock up agreement, and any employment policy statements and employment manuals that the Company or its Board adopts from time to time represents the entire agreement and understanding between the parties with respect to Executive's employment by the Company and supersedes all prior or contemporaneous agreements whether written or oral. With respect to stock options granted on or after the date of this Agreement the acceleration of vesting provisions provided herein will apply to such stock options. This Agreement may be modified only by agreement of the parties by a written instrument executed by the parties that is designated as an amendment to this Agreement.