Powered by Amazon QuickSight, the Alt/Finance dashboards offers a variety of ways to see the details of the data being displayed in a visual. The axes or rows and columns of the visual (depending on the visual type) have labels. Hovering over any graphical element in a visual displays the data associated with that element.
Some visual types use visual cues to emphasize the element that you are hovering over and make it easier to differentiate. For example, the visual type might change the color of the element or highlight it.