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A search box or search field is a common GUI element used in computer programs, such as file managers or web browsers, and on web sites. A search box is usually a single-line text box with the dedicated function of accepting user input to be searched for in a database. Search boxes on web pages are usually used to allow users to enter a query to be submitted to a Web search engine server-side script, where an index database is queried for entries that contain one or more of the user’s keywords.