11.4 Continuous trading
1 Incoming orders and quotes shall be executed in one or more parts at equal or different prices in accordance with the price-time priority principle.
2 If an order cannot or can only be partially executed, the remainder shall remain in the orderbook. Other validity specifications remain reserved.
3 The Exchange may in certain instances suspend trading.
4 The reference price shall be the price paid last. Reference price adjustments remain reserved.