Ordinance amending the Pittsburgh City Code, Title Two: Fiscal, Article IX: Property Taxes, Chapter 263: Real Property Tax and Exemption, Subchapter B: Exemption, by replacing Sections 263.11 through 263.14 with new Sections 263.11 through 263.16, collectively to be titled Subchapter B: Tax Exemptions for Longtime Owner-Occupants of Residential Properties.