25 ILCS 80/5

For purposes of this Act, "supplemental appropriation bill" means any appropriation bill that is (a) introduced or amended (including any changes to legislation by means of the submission of a conference committee report) on or after July 1 of a fiscal year and (b) proposes (as introduced or as amended as the case may be) to authorize, increase, decrease, or reallocate any general funds appropriation for that same fiscal year. The general funds consist of the General Revenue Fund, the Common School Fund, the General Revenue Common School Special Account Fund, the Education Assistance Fund, the Fund for the Advancement of Education, the Commitment to Human Services Fund, and the Budget Stabilization Fund.