How the creator of a PDF file sets up her document determines the extent to which you can use Acrobat Reader's commenting tools to mark the file with notes about its content.

If you're looking for a quick way to edit or sign a PDF document, there are free and easy-to-use tools for iOS, Windows, and Android devices.

You can import and add a PDF to OneNote as a file attahcment or printout image, or convert and add PDF to OneNote. Here's how!