When the DOM column check box is selected, depth-of-market (DOM) volume data is displayed. The total volume size of the best bid price and several prices below the best bid are displayed and are colored green. The total volume size of the best offered price and several prices above the best offer are displayed and colored red.
Further, you can choose to:
•separate bids and asks.
•color cells or not (only available with separate bids and asks).
•display combined, implied (price combined with spread prices), or outright DOM data. (applies to both pre-open and active trading data).
The implied data (whenever available) comes from the exchange and are not calculated values: https://www.cmegroup.com/confluence/display/EPICSANDBOX/Implied+Orders
•display Combo, Implied, and Outright toggle buttons on DOMTrader toolbar:
•display a volume column tooltips that indicate actual volume. This tooltip in helpful when, for example, volume is 11,260. Due to width restrictions, the column displays “11K.” The tooltip displays “11,260.”