50 ILCS 30/10
All revenue bonds issued by an Exhibition Council shall be payable solely from the revenues or income to be derived from the property, facilities and exhibitions of such Council, or any part thereof, may bear such date or dates and may mature at such time or times not exceeding 40 years from their respective dates, all as may be provided in the resolution authorizing their issuance. All bonds, whether revenue or general obligation, may bear interest at such rate or rates, not exceeding the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, in the case of revenue bonds and the maximum rate authorized by the Bond Authorization Act, as amended at the time of the making of the contract, in the case of general obligation bonds, payable semi-annually, may be in such form, may carry such registration privileges, may be executed in such manner, may be payable at such place or places, may be made subject to redemption in such manner and upon such terms, with or without premium as is stated on the face thereof, may be authenticated in such manner and may contain such terms and covenants, all as may be provided in the resolution authorizing issuance.
With respect to instruments for the payment of money issued under this Section either before, on, or after the effective date of this amendatory Act of 1989, it is and always has been the intention of the General Assembly (i) that the Omnibus Bond Acts are and always have been supplementary grants of power to issue instruments in accordance with the Omnibus Bond Acts, regardless of any provision of this Act that may appear to be or to have been more restrictive than those Acts, (ii) that the provisions of this Section are not a limitation on the supplementary authority granted by the Omnibus Bond Acts, and (iii) that instruments issued under this Section within the supplementary authority granted by the Omnibus Bond Acts are not invalid because of any provision of this Act that may appear to be or to have been more restrictive than those Acts.
50 ILCS 30/10