XS report contains the XS breakout by metric and items with XS.

The breakout by metric shows you a Pie chart of the sources of XS within the item currently selected in the drilldown.

The items with XS list shows you the individual violations. Clicking on a slice of the pie will filter the list for the selected problem. To deselect a problem, click it again in the pie chart - the list will become un-filtered.

Double-clicking on an item in the items with XS list will take you to that item's child graph in the composition perspective (unless the item is a method, in which case the source viewer will pop up).