quote:The followings are several examples of non-free, advanced add-ons:
Foxit Reader Pro Pack is not free. It unlocks functions to save annotation, save a PDF document as a text file, copy text from text viewer. Actually without Pro Pack, you are still able to annotate a PDF document and print it out. However when you save the annotated document, it will be stamped with an evaluation mark on the top-right corner of the annotated pages. If you purchase a Pro Pack add-on, then there will be no evaluation mark.
Foxit PDF Creator, which allows you to convert non-PDF file into PDF file, is non-free.
Foxit PDF Editor, which allows you to modify content of a PDF file, is non-free.
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