It displays each level you have visited starting from the CCRS home page. This allows you to always know where you are relative to the home page. Another way to find your location is to look at the green menu bar. The box that appears depressed, or pushed in, is the category in which you are located. The final way to find out what category you are located in is to look in the upper left corner of the page.
Some pages have a logo showing the title of the category location.