ocr: Figure 3.1 An example ofa cono: tree: and perspechve wall. These fechniques use: the display uniformly, assigning 1 large number of pixels to a tocus aree and retaining contextual cues in less detail. These techniques allow. the display ofa larger number ofifems that could otherwise be pur on the screen. Used with permission of Stuart card: of Xerox PARC.
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