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Archive for September, 2009

Layers (Optional Content Groups)

Tuesday, September 8th, 2009

Layers or as they are more formally known Optional Content Groups (OCG) is representing a collection of graphics that can be made visible or invisible dynamically by users of viewer applications. (This ca­pability is useful in items such as CAD drawings, maps, and multi-language documents) With the introduction of PDF version 1.5 came the concept of Layers. Form and image and annotations can be made optional too.

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