For anyone responsible for designing, specifying, implementing, documenting, or managing the visual appearance of computer-based information displays. Ironically, many designers of graphical user interfaces are not always aware of the fundamental techniques that are applied to communication-oriented visual design - techniques that can be used to enhance the visual quality of GUIs, data displays, and multimedia documents. This book describes some of the most important design rules and techniques that are drawn from the rational, functionalist design aesthetic seen in modern graphic design, industrial design, interior design, and architecture - and applies them to various graphical user interface problems experienced in commercial software development.