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Commentary When designing a book, for instance, the purpose of the headings and sub-headings is not only to separate and order the text but also to aid navigation. Over the course of hundreds of pages, it is vital that the reader is able to find with ease the section or subsection they wish to read. It is therefore important that headings remain stylistically consistent throughout. It’s tempting, with so many styling variables at our disposal, to start applying treatments to headers until we end up with a “dog’s dinner” of typographical applications. Keep it simple and concentrate more on balancing the size of the headings with the size of the body text so that you get a clear hierarchy among the different heading levels, and a visual connection bet....PD