Subject: Re: Annotating PDF files
>>>>> "David Cramer (Tech Pubs)" <firstname.lastname@example.org>: > Apparently that's a proprietary adobe thing that they keep to themselves > so you'll have to buy acrobat: > http://www.renderx.net/lists/xep-support/4108.html I see. Thanx for the information! Short summary for those who don't wish to follow the URL: Acrobat 6 and 7 looks for a particular digital signature in the PDF file before they allow commenting into the document. The only tool that's able to insert that digital signature is Adobe Acrobat.