(40 ILCS 5/17-109.1) (from Ch. 108 1/2, par. 17-109.1)
    Sec. 17-109.1. Pension deferred.
    "Pension deferred": A pension of a sum determined on termination of service but payable upon the expiration of a fixed period of time, provided the person concerned is alive at such date. All such pensions shall be calculated in accordance with the laws in effect at the date of termination of service.
(Source: P.A. 83-792.)