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7. Scripting and Programming Acrobat > 99. Use Acrobat Plug-Ins to Extend PDF

Use Acrobat Plug-Ins to Extend PDF

The Acrobat API gives you the power to adapt PDF to your needs.

Some of our Acrobat hacks add features to Adobe Acrobat using plug-ins. But plug-ins also have the power to extend Acrobat with custom tools, or to extend PDF with custom PDF annotations. The best illustration of this power is the fact that Adobe uses plug-ins [Hack #4] to implement Acrobat’s most interesting features, as shown in Figure 7-12. PDF form fields, for example, are implemented as PDF annotations. A specific plug-in (AcroForm.api ) handles them in Acrobat. This plug-in adds tools to Acrobat for creating and editing form field annotations, and then this plug-in handles user interaction with the form fields.


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