Page header running header or running headline, is a header that appears on each standard page. Running heads do not usually appear on display pages such as title pages, or on other front or back matter. Running heads in a book typically consist of the title on the left-hand (verso) page, and the chapter title on the right-hand (recto) page; or the chapter title on the verso and subsection title/subhead on the recto, aiding the reader's navigation by showing what content exists within the two-page spread at hand. A special case of the latter is in dictionaries, whose running heads are called
Book test cases using the dictionary test principle have the magician holding the book in front of them, facing out. Another major class of book tests involves a mnemonic device to distribute "money words" across a page. For instance, a given page might have the word "Abermarle" on it, and this would be the only "proper name" that starts with the letter A and the spectator would be invited to select a proper name beginning with A. "Hybrid" systems replace the gimmick book with a single gimmick page, which is styled and sized to fit within a target magazine or book. The