Ohio Rev. Code Ann. § 140.06
(E) The bond proceedings may contain additional provisions as to:
(I) Such obligations may be secured additionally by a trust agreement or indenture between the public hospital agency and a corporate trustee which may be any trust company or bank having the powers of a trust company within or without this state but authorized to exercise trust powers within this state. Any such agreement or indenture may contain, as part thereof, any of the bond proceedings, and may contain any provisions that may be included in the bond proceedings as authorized by this section, and other provisions which are customary or appropriate in an agreement or indenture of such type, including but not limited to: