Endpapers, again, are the front of the book and the back of a book of a hardcover book. It is not the cover. It is not the inside of the book. They are four pages at front and back that hold the book together, OK? The front endpaper is a four-page item. Page one which is behind this yellow page is white and it is not printed and it glues to the cover. Page two and three have been printed yellow. We started with white paper. Page four is white. It does not print. These are your endpapers. It faces the text or the guts of your book and the same is true on the back. Similarly, on the back, you have a four-page endpaper unit. Page one is white. It did not print and it faces the last page of your book. Pages two and three, printed in this yellow. Page four of the endpaper, you (1:00) do not see, it is glued down to the cover.