To the extent permitted by a fund`s written investment guidelines, as expressed in the fund`s current prospectus and the Fund`s SAI in its registration statement, the fund manager is entitled to enter into derivative agreements on behalf of the Fund (e.g. B futures account contracts, DFTFTA framework contracts, ISDA framework contracts and related documents) and to take other necessary or appropriate measures. in accordance with trust procedures. A user agreement where the parties enter into transactions involving the purchase or sale of mortgage-backed securities and other securities that may be defined, including under the issuance, the TBA, the dollar roll and other transactions that may result in or lead to the late delivery of securities. . . .