I have large projects with deep folder structures stored in my Documents folder, which is now stored iCloud Drive after macOS Sierra. However, I can't seem to find a PDF annotator (hilighting, drawing markup with pencil, adding notes, etc) with a decent file manager that lets you easily navigate deep folders in iCloud Drive outside their own app folder. All use the default apple dialog which doesn't save its last locaton, causing you to have to re-navigate back through the folder structure when you want to open another file in the same directory you were just in. This rules out the iPad for efficient editing of documents in large projects. Anyone know of a good one? Thanks!