Structures and discovery mechanisms for the items in the CPS-VO are provided to help find them. These are based on vocabulary tagging and term labeling. There are file browsers and search functions that aid in finding those items that you are looking for. An important distinction between the file browsers in the CPS-VO and one on your computer is that the same item maybe found under different folders. This increases the chances for you to find items that have been placed in more than one category. There are two main search engines that also help you to find material. One looks for some text in descriptions and the other looks for labels.