Hi there... I'm hoping someone can help me out with this. I've been using Preview for all of my readings for school, and I've been highlighting, drawing lines/rectangles etc. as I go along. It has worked great so far. The thing is now that I'm going back and reviewing my notes, the highlighting as all but disappeared. You can barely detect it on the first pages, and it gradually gets more noticeable the more recently it has been added. It's like it's fading... Anyone have any idea why this might be or how I can revert back to the way it looked when I first did it? As you might imagine, it's very frustrating to go back and try to refresh your memory when all the highlighting and marks are gone Thanks!!