As used in this Act:
"Agreement" means any mortgage, trust deed or other conveyance having the effect of a mortgage, or any contract for deed, with respect to real property situated in this State.
"Obligor" means the mortgagor, the grantor of a trust deed or similar conveyance, the purchaser under a contract for deed, or the successor in interest of any of the foregoing.
"Obligee" means the mortgagee, the grantee of a trust deed or similar conveyance, the seller under a contract for deed, or the successor in interest of any of the foregoing.
765 ILCS 920/1