The Track Comparison Pane is used to compare some data (such as length, or total ascent) between multiple tracks. You can hover the mouse cursor over an individual bar to display additional information about that particular track. Clicking on a bar will select that track, which will turn it yellow. Otherwise, the bars are drawn in the color described in "Track Colorization", as determined by the tags applied to that track.>
The Lock Icon in the control area will mirror the query to the Track Pane, so that the bar chart will display the same set of tracks. Otherwise, the queries are independent.
The Axis Icon will show or hide the horizontal axis.
The Sort Order Icon will change between an ascending and descending sort order.
The "Set Bar Width..." context menu will allow the size of the bars to be configured.
The "Show Bar Values" context menu will display numeric values inside the bars.