SECTION 20.5 INTERPRETIVE AND ADDITIONAL PROVISIONS. In connection with the operation of this Agreement, the Custodian and each Fund on behalf of each of the Portfolios, may from time to time agree on such provisions interpretive of or in addition to the provisions of this Agreement as may in their joint opinion be consistent with the general tenor of this Agreement. Any such interpretive or additional provisions shall be in a writing signed by all parties, provided that no such interpretive or additional provisions shall contravene any applicable laws or regulations or any provision of a Funds organic record and Prospectus. No interpretive or additional provisions made as provided in the preceding sentence shall be an amendment of this Agreement.