This book has many links, both to footnotes and to longer notes with more explanation. Clicking on a footnote marker on a page will take you to the text of the footnote.
Sometimes, a footnote will just contain the text “See note.” meaning there is more explanation for that note. Clicking on the highlighted word will take you to the Notes section. If you scroll down through those notes, you’ll find the text for that particular page.
THE NEW MEDIEVAL LIBRARY
The School of Aristotle.
See page [9].