› The edging's design (using icons) reveals information about the extent of contained design styles. It is an idea from a tradition of the Renaissance, where edgings were often decorated with ornaments. So this design element already
is a form of retro design. Decorative elements are an important expression of human culture and function to reveal the value of an object.

› Throughout the book's design one can find numerous hints to quotations about design styles that can often only be found at second sight.
And that is the actual message: to take a closer look to understand that retro design is more than many prejudices and clichés say.