> I often wish for interactive, annotated, "hypertextual" versions of books -- technologically it should be trivial to build. Heavily annotated books pre-date

> I often wish for interactive, annotated, "hypertextual" versions of books -- technologically it should be trivial to build. Heavily annotated books pre-date the Internet - my edition of M&M footnotes and endnotes the hell out of the book for context.