![]() The first one ( MyLayer) is hidden and the other two are visible as indicated by their Show/Hide buttons.įigure 1 OCG Layers Panel and Menu Options Clicking the mouse on one of the Show/Hide buttons toggles the visibility of the page content associated with that layer. Each entry in this panel represents an OCG in the document. Figure 1 shows the Layers Panel (Menu: View>Navigation Tabs>Layers). To the user, an OCG appears as a physical layer of content on a PDF page. ![]() OCGs are used to create multilayer pages (like a stack of transparencies), for everything from multi-language documents, layered views for architectural plans, to animated displays. This is not another kind of form field or annotation, but true page content. In Acrobat 7 (Professional and Standard) it is possible to both create and control these content layers through Acrobat JavaScript, giving the document developer a totally new ability to use dynamic content purely through scripting tools already available in Acrobat Professional. OCGs are a mechanism for selectively controlling the visibility of page content. In Acrobat, the term “Layers” refers to Optional Content Groups (OCGs).
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