Main article:Smaller mobile devices such as (PDAs) and typically use the WIMP elements with different unifying metaphors, due to constraints in space and available input devices. Window managers and other software combine to simulate the desktop environment with varying degrees of realism.Post-WIMP interface. The windowing system handles hardware devices such as pointing devices, graphics hardware, and positioning of the pointer.In, all these elements are modeled through a to produce a simulation called a in which the display represents a desktop, on which documents and folders of documents can be placed. Good user interface design relates to users more, and to system architecture less.Large widgets, such as, usually provide a frame or container for the main presentation content such as a web page, email message or drawing. This allows users to select or design a different at will, and eases the designer's work to change the interface as user needs evolve. A allows flexible structures in which the interface is independent from and indirectly linked to application functions, so the GUI can be customized easily. The widgets of a well-designed interface are selected to support the actions necessary to achieve the goals of users. Typically, users interact with information by manipulating visual that allow for interactions appropriate to the kind of data they hold. Methods of are used to ensure that the visual language introduced in the design is well-tailored to the tasks.The visible graphical interface features of an application are sometimes referred to as chrome or GUI (pronounced gooey).

Its goal is to enhance the efficiency and ease of use for the underlying logical design of a stored, a design discipline named.

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