In order to carry out the provisions of this Chapter, two subdistricts are established within the Special Downtown Brooklyn District. In each of these subdistricts, certain special regulations apply that do not apply within the remainder of the Special Downtown Brooklyn District. The subdistricts are outlined on Map 1 (Special Downtown Brooklyn District and Subdistricts) in Appendix E of this Chapter. Special regulations set forth in Sections 101-60 through 101-632, inclusive, shall apply to the Fulton Mall Subdistrict. Special regulations set forth in Sections 101-70 through 101-75 and Appendices A, B, C and D, inclusive, shall apply to the Atlantic Avenue Subdistrict. The subdistricts are also subject to all other regulations of the Special Downtown Brooklyn District and the underlying districts except as otherwise specified in the subdistrict regulations.