Amazon offers authors and publishers (as well as other sellers on their products) the ability to add additional content (mostly graphics) to a book’s Kindle page. This is something fairly new. Within the past couple of years, I think (but time is still somewhat foggy for me due to pandemic stuff).

To see this additional content on a desktop, a visitor to a book page must scroll down past the cover and description and then past the Products Related to This Item section. On a mobile device, thi...