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
The Book of the Law of both "The word of the law" Thelema and Aiwass. DCLXVI is 666, the number of Crowley as Great Beast both as Adept and Magus. This is a way of saying that the book was delivered by Aiwass (whose number is both 93 and 418) to Crowley, who is The Beast 666. The facsimile manuscript of the Book is not, however, numbered 220, but XXXI (31) as the first chapter's verses are unnumbered in the original manuscript: that is, no verse numbers were dictated to Crowley for chapter one. Both editions were titled by Crowley AL, pronounced "El", value 31,