Pretty amazing. I didn't think it was real, but these are for sale and I ran the description in Google Translate from Russian to English and the guy just folds these pages. Neat!

Or in my case...get them at the library when you're already reading several. I seriously have to tell my sister to attach me if I try and get away with it! I always tell myself :"Oh, but I've really wanted to read this!!!! I just get this one...." :)