content: This latest upgrade screwed up all the good things I liked about the app. I use large PDF files. Bookmarks were once easy to set up and use now they require navigating with tapping on the screen several times just to set them up or to find them. Entirely too confusing and unnecessary. Even getting to the file browsing system section is now more difficult than it should be. One misstep and the screen enlarges and you got to figure out how to get back. I use it to read music lyrics on stage and cant be spending a lot of time navigating a crappy app between songs. It seems Adobe could not leave well enough alone.