Editing Icon (computing) (section)

=== Control widgets ===

Over time, certain [[GUI widget]]s have gradually appeared which are useful in many contexts.  These are graphical controls which are used across computer systems and can be intuitively manipulated by the user even in a new context because the user recognises them from having seen them in a more familiar context. Examples of these control widgets are scroll bars, sliders, listboxes and buttons used in many programs. Using these widgets, a user is able to define and manipulate the data and the display for the software program they are working with. The first set of computer widgets was originally developed for the Xerox Alto. Now they are commonly bundled in widget toolkits and distributed as part of a development package. These control widgets are standardized pictograms used in the graphical interface, they offer an expanded set of user functionalities beyond the hyperlink function of computer icons.<ref>{{cite web|url=http://www.catb.org/~esr/writings/taouu/html/ch02s05.html|title=The first GUIs|website=www.catb.org}}</ref>