40 ILCS 5/5-131: Future entrants - Re-entry and new fixation.

Except as may be otherwise provided in this Article, no amount of annuity other than that fixed in accordance with Sections 5-129 and 5-130 shall be granted to any future entrant therein described unless he re-enters the service. If such re-entry occurs, the amount of annuity shall again be fixed as provided herein.