Ohio Revised Code Title XLIX. Public Utilities § 4981.17

(1) A pledge of the rentals, revenues, and other income, charges, and moneys out of which the principal of and interest on the bonds shall be payable and a mortgage of all or any part of the pledged facilities, including any enlargements of and additions to such pledged facilities thereafter made;

(2) Maintenance of each pledge, trust agreement, and indenture of mortgage made for the security of any of the bonds until the issuer has fully paid the principal of and interest on the bonds, or provision therefor has been made, for the security of which the pledge has been made and the trust agreement or indenture of mortgage has been given;

(3) In the event of default in any payments required to be made by the bond proceedings or any other agreement of the issuer made as a part of the contract under which the bonds were issued, enforcement of such payments or agreement by mandamus, the appointment of a receiver in equity, or if a mortgage has been given, the foreclosure of such mortgage or any combination of the foregoing;

(4) The rights and remedies of the bondholders and of the trustee and provisions for protecting and enforcing them, including limitations on rights of individual bondholders;

(5) Such other provisions as the trustee, the original purchaser of the bonds, and the issuer agree upon.