quibble (and why should today be different?), the RECTO definition should be “pages”, not “leaves”. Each leaf has a RECTO (right) page and a VERSO (left) page. But of course, “page” or “pages” wouldn’t fit the surface! On edit: some commentators endorse the reading that "the leaves to the right (of the book opening)" present the recto pages. Fair enough.
Times Cryptic No 27144