Currently to see the information of the bar you need to turn on the data box & then hover over the bar. This seems like a unnecessary step. You then have to turn off the data box to be able to see the entire chart again.
Seems to me it would be much easier to just hover over a bar & hold down the right mouse button (I know the left button is already used for chart dragging) to show the data for that bar. This would eliminate the constant toggling of the data box.
Also I believe this should show any transactions you had on this bar as well. (IE sold 1 @ x.xx). Having to enable an entire different module just to see my fill in a trade seems really clunky & takes up valuable real-estate.