If you want to allow commenting on a PDF file, you must be the author of the file or have access to the Adobe Acrobat program that was used to construct it. Even if you use the most recent version of ...

PDF files have the option to let you share and comment on documents in a wide range of applications. Adobe Acrobat Reader and other free PDF programs offer a subset of the capabilities of the paid ...

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Love them or hate them, PDFs are an integral part of our lives which is why one certainly cannot ignore them. But even then, editing PDFs and working around them can ...