An Act amending the act of July 31, 1968 (P.L.805, No.247), known as the Pennsylvania Municipalities Planning Code, further providing for planning commission membership and business, for planning agency powers and duties, for official municipality maps, for county planning agency jurisdiction, for subdivision and land development ordinances, for plat approval and recording, for municipal curative amendments, for zoning appeals, for jurisdiction of county planning agencies, for standards and conditions for planned residential development and for zoning hearing board membership, organization and jurisdiction.