A tree view or an outline view is a graphical user interface element (widget) that presents a hierarchical view of information. Each item (often called a branch or a node) can have a number of subitems. This is often visualized by indentation in a list.
An item can be expanded to reveal subitems, if any exist, and collapsed to hide subitems.
Tree views are often seen in file manager applications, where they allow the user to navigate the file system directories. They are also used to present hierarchical data, such as an XML document. Extended tree view is the central component of an outliner application.
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Famous quotes containing the words tree and/or view:
“The pine tree seems to listen, the fir tree seems to wait, and neither with impatience:Mthey give no thought to the little people below them whose impatience and curiosity eat them up alive.”
—Friedrich Nietzsche (1844–1900)
“It is not so much that women have a different point of view in politics as that they give a different emphasis. And this is vastly important, for politics is so largely a matter of emphasis.”
—Crystal Eastman (1881–1928)