1) Added a feature to buy or sell to a certain depth of the order book. These shortcuts are there to help you trade faster. These orders are "immediate or cancel" so it will attempt to fill as much as possible to that depth then the order is closed.
a) The buy side of the orderbook has a new button to sell to that depth.
b) The sell side of the orderbook has a new button to buy to that depth.
Note: this feature will set the order type to "immediate or cancel" for future orders on that page unless changed back by the user.