User interface markup language

A markup language that renders and describes graphical user interfaces and controls. Many of these markup languages are dialects of XML and are dependent upon a pre-existing scripting language engine, usually a JavaScript engine, for rendering of controls and extra scriptability. The concept of user interface markup languages is primarily based upon the desire to prevent the “re-invention of the wheel” in the design, development, and function of a user interface. The typical user interface markup language solidifies often reused program or script code in the form of markup, making it easier to focus upon design of a user interface in an understandable dialect as opposed to focus on function. Examples for UIMLs include XAML, XUL, and SVG. ← Wikipedia