This Agreement contains the entire agreement between the Parties concerning the subject matter expressly addressed herein and supersedes all prior agreements and understandings, written and oral, between the Parties with respect to such subject matter. However, nothing in this Paragraph 22 is intended to limit any obligations of the Parties under any other agreement that Employer may enter into with Executive after the earlier of the Effective Date or the execution of this Agreement by Executive. The provisions of this Agreement which provide for accelerated vesting and extended exercisability of stock options shall constitute amendments to any stock option agreements previously or hereafter entered into between Executive and Employer.