These magic power coffee books have the tendency to be over-sized and rather heavy. Since they basically stay on the table, its not necessary for them to be easily moveable. Usually, their subject is nonfiction, and most often they are related to art or a visual subject matter. Their pages generally are made up of mostly illustrations or photographs and small blocks of text, or captions instead of long sections of text. Because these types of books are aimed at those who might pick the book up for a casual read (or even just a look), the text inside is often more simplistic than some other books written on the subject. Because of this, the term itself can be used negatively to mean a book that presents a more casual approach to the subject.