Ref:GUI

From Dark Omen Wiki

GUI (Graphical User Interface) is the collected interaction and presentation objects used in an graphical environment to allow the user to communicate and handle ("interface") with it. The theory and construction of user interfaces is called interface design, and in normal interface design terminology, a GUI generally consists of containers and controls (sometimes also called windows and widgets) where controls principally (if not exclusively) are objects that can display information or receive user actions (text labels and buttons) and containers contain collections of controls or other containers. (Due to implementation details, on some GUI systems ALL containers and controls are known collectively under the hood as "windows". F.i. MS Windows is such a system).