I don't read so many books recently because I'm rather busy to read quite a few documents mainly on the Internet. I'm happy when I read those documents on the Internet because I can open as many pages as I like and switch between them just by clicking the tub on the browser software. It's so convenient that I don't like to open paper books or manuals any more. When I have to read some paper books at one time it is very irritating because some of them automatically close and I have to find my page again and again. Sure, bookmarks keep my page, but I have to re-open the page because most bookmarks can't hold the page open. This is the way which is very useful in such case. All I have to do is clip my favorite page with this huge paper clip. It is heavy enough to hold my page open and I don't have to feel frustration any more. If you need to read thick books such as computer manuals or dictionaries at one time, this cheap clip will work much better than you expect.