It'd be great to be able to do basic markup in the PDF view in Browzine—even just highlighting would be fantastic. A lot of academics like to mark up PDFs while reading and then store the marked-up version in a Zotero or Mendeley library. Browzine is fantastic at retrieving and then uploading to a personal library, but the middle markup step is missing. I used to be able to make it work with Papership or Zotfile, both of which are now defunct. I can export to iAnnotate or some other annotation app, but I can't then get it into Zotero directy or transfer the marked-up PDF back to Browzine to make use of Browzine's outstanding Zotero upload capabilities. And I haven't been able to find a way to access my Zotero library from any of my markup apps. I used to rely on this functionality and now I can't.