Notice of Filing of Rule Change, as Modified by Amendment No. 1 Thereto, (1) Amending Rule 13-Equities To Establish New Order Types, (2) Amending Rule 115A-Equities To Delete Obsolete Text and To Clarify and Update the Description of the Allocation of Market and Limit Interest in Opening and Reopening Transactions, (3) Amending Rule 123C-Equities To Include Better-Priced G Orders in the Allocation of Orders in Closing Transactions, and (4) Making Other Technical and Conforming Changes