Is there a way to enable commenting adobe PDF?
It might be a licensing issue.
Even thought the PDF has no security, commenting is still NOT allowed. Might be a licensing issue since the original was created using open source tools, not Acrobat.
"PDF Producer: Apache FOP Version 1.1" -- Commenting Not Allowed.
"PDF Producer: Adobe LiveCycle Designer ES 10.0" -- Commenting Works.
https://stackoverflow.com/questions/18894689/adding-enable-for-commenting-adobe-reader-using-acrobat
http://support.itextpdf.com/node/24
Platform: Linux Mint with Adobe Reader 9.
There is a feature to add annotations using the default gnome evince, but the tool doesn't have the feature switched on in Ubuntu 10.10, so you have a choice between:
pdfedit - Dedicated tool for editing pdf files.
flpsed - Useful, but not as polished.
inkscape - Importing the pdf, adding your visible notes and exporting back to pdf, downside is, they're not real pdf notes.
Foxit Reader allows pretty advanced commenting.