Another method of creating progressive disclosure on a static viewgraph is to
block or mask portions of it with an opaque card. The items you may use to
block viewgraph portions include solid, opaque cards slid down the projected
surface of the viewgraph, or hinged cards gradually peeled away to reveal
information. Irregularly cut masks block selected images and create interest.
Figure 2-27 shows a static viewgraph illustrating the progressive disclosure
techniques for presentation.
Figure 2-27. Viewgraphs that show progressive disclosure
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