Commencement of Chapter XXC brings specified urban and development authority areas within the Chapter under section 269U. Notification under the powers of section 269U appoints the 1st day of June, 1989 as the date on which Chapter XXC of the Income-tax Act will come into force in specified urban and development authority areas. The notification enumerates seventeen areas-including a union territory, municipal corporations, development authorities, city and district jurisdictions, and a cantonment civil area-each defined by the respective state or local enactment, thereby fixing the territorial scope of the Chapter's application.