81-51 - General Provisions LAST AMENDED 8/26/2010 In order to establish the Penn Center Subdistrict as a destination and enhance its retail, entertainment and commercial character and expand accessibility to its transportation network, special regulations are set forth governing the location and type of #signs#, urban design and streetscape relationships, and the improvement of pedestrian circulation to and from public transit facilities. The regulations of Section 81-50 are applicable only in the Penn Center Subdistrict, the boundaries of which are shown on Map 1 (Special Midtown District and Subdistricts) in Appendix A of this Chapter, except as set forth for rail mass transit facility improvements, pursuant to Section 81-541. These regulations supplement or modify the provisions of this Chapter applying generally to the #Special Midtown District#, of which this Subdistrict is a part.