Line Recording Bookmark

Are you ever forced out of a book, halfway through the page? Then when you get back to reading it, you have to skim over the entire page to find where you left off? That happens to me sometimes, as well. I designed this to fix that problem. Basically, what happens is, when you leave off at a certain line, you slide the slider to point to that line, and then you close the book on it. (Try and close the book on it as close as possible to the spine, so you don't have to worry about the slider slidi