Add another "Cancel All" Button - See photo

An active trader needs two very quick buttons when trading on the DOM.
A button to “cxl and flatten”, and a “cancel all” button to simply clear the buy/sells on the DOM.

The single current drop-down button is problematic as it takes too long to change and visually confirm for an active trader.Trading_Buttons

you can use hotkeys for this one, in case that helps in the meantime, I mapped it ctrl+1