Indiana Code Title 36. Local Government § 36-7-12-28

(1) mortgage the land, any interest in land, or the facilities on account of which the bonds are issued;

(2) pledge all or part of the payments to be received by the unit;

(3) set forth the rights and remedies of the trustee and the holders of the bonds, including provisions restricting the individual right of action of the holders;

(4) contain provisions considered reasonable for protecting and enforcing the rights and remedies of the holders or lenders, including covenants setting forth duties of the unit and the economic development commission regarding:

(5) contain provisions regarding the investment of money, the sale, exchange, or disposal of property, and the manner of authorizing and making payments, notwithstanding any general statute relating to these matters;  and

(6) provide for the establishment of reserve funds from the proceeds of the bonds or from other sources to secure the prompt payment of the principal and interest on them.