(765 ILCS 335/1) (from Ch. 30, par. 39)

Sec. 1. When the reversion expectant on a lease, made either before or after the passing of this act, of tenements or hereditaments of any tenure, shall be surrendered or merged, the estate, which shall for the time being confer as against the tenant under the same lease the next vested right to the same tenements or hereditaments, shall, to the extent and for the purpose of preserving such incidents to, and obligations on the same reversion, as but for the surrender or merger thereof, would have subsisted, be deemed the reversion expectant on the same lease.

(Source: P.A. 84-1308.)