Books are printed with uniform book numbers and pricing at the lower right of the back cover, and periodicals are printed with copyright pages on the back cover, or used to print non-literal words and pictures such as catalogues. The back cover is also called seal four.
The back cover is the bottom of the book cover, an important part of the book, and an extension, supplement, generalization or emphasis of the cover and spine. Books are printed with uniform book numbers and pricing at the lower right of the back cover, while periodicals are printed with copyright pages on the back cover, or used to print non-literal words and pictures such as catalogues.
The back cover and the cover are closely related, complementary and indispensable.
The title page is used after the second cover or liner, and the printed text is similar to the cover, but the content is more detailed. The function of the title page is firstly to supplement titles, works, publishing houses and other items, and secondly to decorate books to increase aesthetic feeling.
Auxiliary text is the content that plays an auxiliary role in explaining or referring to the book content, such as executive summary, crown map, preface, preface, table of contents, appendix, appendix, annotation, references, index, postscript, etc.