Preface
If the canopy comes beforehand, it's a preface for the rest of the canopy.
Although not necessarily a book preface, you can imagine a book made out of canvas pages. The canvas pages that came beforehand (i.e. in the beginning, before the book started) is the preface.
じょ
つい, ついで
None
You read the preface. It just goes on and on and on about Jo-Anne (じょ), a short lady the author loves very much.
Actually imagine reading through the preface of your favorite book. Except, there's a preface that just goes into great detail about Jo-Anne and doesn't seem related at all to the book.