Hello, Is there any way that I can have a group of people annotate the same pdf file but the file would indicate who added the annotated marks on the PDF in the end? I have 5 users that will be using box.net or dropbox sharing the same PDF file in a collaborated folder and I would like to know if it is possible to handle version control from an annotated pdf document. Anyone have any idea of which app or if this is even possible? Example would be I open the PDF and I highlighted the first paragraph then someone else opens it and enters a note in it and the next person highlighted the last paragraph. Anyway to see who did what on the final saved copy? Thanks to those that answer.