We are launching a new order feature for our API users on 28 August at 04:00:00 UTC. Last Within Mark can be applied to Stop Market Orders and Stop Limit Orders. API users can test it now on Testnet.
The new feature has been introduced for our API users initially, and will be made available for all users on our trading web page at a later stage.
This additional feature expands the range of tools we provide for our users to help them build effective trading strategies. Please see our blog for more information.