Except for the Indemnification Agreement and any agreement or document expressly incorporated herein, this Agreement supersedes any and all prior oral or written agreements and sets forth the entire agreement between Biogen and you with respect to your separation from Biogen, including without limitation, any severance plan or policy. Notwithstanding anything in the foregoing sentence to the contrary, your obligations under the PII, the Noncompete Agreement and the Indemnification Agreement shall continue in full force and effect. No variations or modifications may be effective unless reduced to writing and signed by both parties.