ORDER
PER CURIAM.
Appellee’s motion to strike the portions of appellant’s brief that address matters not encompassed by this- Court’s grant of allowance of appeal, which was limited to the issue of equal protection, is granted. The order of the Commonwealth Court, 154 Pa.Cmwlth. 586, 624 A.2d 286, is affirmed. See Harper v. State Employees’ Retirement System, 538 Pa. 520, 649 A.2d 643 (1993). MONTEMURO, J., is sitting by designation.