Amending Title 7 of The Philadelphia Code, entitled "Housing Code," by adding a new Chapter 7-200, entitled "Mixed Income Housing Program," to provide for affordable housing standards; amending Section 14-702 of The Philadelphia Code, entitled "Mixed Income Housing," to make related changes; amending Chapters 14-600 and 14-700 of The Philadelphia Code, entitled, respectively, "Use Regulations" and "Development Standards," to amend certain zoning standards relating to residential development; and making related amendments; all under certain terms and conditions. — Open Common Ground