The design and layout of your book (also known as interior designing) should reflect the subject of the book and style of your writing. The design and layout of your book will combine choices of fonts, illustrations, and other elements placed on pages using a consistent layout design throughout the book. Book layout is similar to formatting but their is a slight difference: interior designing of your book is the look of the inside pages. Formatting is adjusting the size of the book to fit the printer and making sure that all page numbers and headings are inserted correctly.