A member that is a trading center in an NMS Stock shall establish, maintain and enforce written policies and procedures that are reasonably designed to comply with the requirements of the Regulation NMS Plan to Address Extraordinary Market Volatility (Plan) and specifically to prevent:
(a) the execution of trades at prices that are below the Lower Price Band or above the Upper Price Band for an NMS Stock, except as permitted under the Plan;
(b) the display of offers below the Lower Price Band and bids above the Upper Price Band for an NMS Stock; and
(c) the execution of trades in an NMS Stock during a Trading Pause; however, bids and offers may be displayed during a Trading Pause, as permitted under the Plan.
• • • Supplementary Material: --------------
.01 For purposes of this Rule, the following terms shall have the meanings as set forth in the Regulation NMS Plan to Address Extraordinary Market Volatility: "Lower Price Band," "NMS Stock," "trading center," "Trading Pause" and "Upper Price Band."