A filter is applied to a list of items to limit which items are visible. For example, the list of New England states includes; Maine, New Hampshire, Vermont, Connecticut, Rhode Island, and Massachusetts. If a filter is applied to the list to show only states with the letter "o" in their name, then only Vermont, Connecticut, and Rhode Island would remain. Search fields apply filters to lists such as contacts, the mailbox list, playlists, and the list generated by the Item Chooser. This is different than sorting a list, which simply makes all the members of the list appear alphabetically. Search engines such as Google and Bing combine filtering and sorting by filtering a list of millions of web pages to show only the ones that contain the words being searched for. Then they sort the list into the order they think is most relevant to the searcher.