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Professional Development with Visio® 2000 by David Edson

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Visio Documents and Layers

If any of you come from a Computer Assisted Design and Drafting (CADD) background, the concept of layers will be quite familiar to you. For the rest of you who might not know about layers, here's a brief history.

In the beginning, there was drafting. This was accomplished on single sheets of paper (well, actually papyrus or parchment, but that's a different story altogether). Drawings were painstakingly copied from one sheet of paper to another to create copies. This went on for centuries (quite literally). Then some disgruntled and free-thinking draftsperson got the bright idea that if the sheets of paper were transparent enough, you could stack them, one on top of another, and see through to the information on the ...

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