2. A file browser

Many hierarchical structures are suitable for visualisation within Pad++. The second application we will look at is a file browser.

An important concept in the zoomable coordinate system is that objects have an absolute physical location. The metaphor is not one of viewing a small part of the data through a window, as in MS-Windows. Instead, all of the data is placed directly on the Pad++ surface, and you navigate through the data by panning and zooming. In this sense, Pad++ is a 2.5 dimensional virtual reality.

For example, in the Pad++ file browser, each file is shown as a small rectangle with a label.

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