Book jacket hype is a term used to describe the promotional material found on the outside of a book. This includes a BLURB (5 letters), which is a short description of the book, a BIO (3 letters) which is a short biography of the author, bios (4 letters) which are multiple biographies, BLURBS (6 letters) which are multiple short descriptions, and a FLAP (4 letters) which is a fold-out section of the book jacket. All of these elements are used to create hype and draw attention to the book.