Add-On to allow annotation of PDF File Attachment in QBase

I realize I'm answering a post from SIX years ago...but it came up in a search when I was looking for something else, so wanted to answer! We've integrated with a cool tool from a company called Apryse who has a product that can be embedded into a QB app that allows for PDF mark-up etc. Also, depending on your requirements/options, the new bluebeam integration might be able to solve for this as well.