| http://www.w3.org/ns/prov#value | - The programmer interfaces with the database 222 via a database interface 314, which provides the functionality of the data link 218. [0120] A graphical user interface (GUI) 316 provides user control of the programmer software program through menus and toolbars shown on a display portion of an input/output unit 318 and selected with a keyboard and/or a pointing device such as a mouse or trackball.
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