It looks like an organization system for cutting leftover fabrics into useable sizes for scrap quilts. There are other methods out there, and probably quite a bit of info online. Let me see if I can link a few sites:
http://quiltville.com/scrapusersystem.shtml
http://www.sassyquilter.com/organizing-fabric-scraps/
http://blog.shopmartingale.com/quilt...-quilt-scraps/
I would be put-off from buying the book because the reviews says it is color-copied rather than printed. That's being a little TOO thrifty for me!
http://www.amazon.com/The-Thrifty-Qu...dp/0982688105/