You can use the provided hyperlinks to "drill
down" into the book and then use your browser's "previous page" key to
return to this page. Specifically, you can use the provided hyperlinks to go from this
page "down" to the Contents page, from
the Contents page "down" to the various sections of the book, and from the
various sections "down" to the footnote and endnote pages. You can then use the
"previous page" key to go "up" from the footnote and endnote pages to
the section pages, from the section pages "up" to the Contents page, and from
the Contents page "up" to this page. This is not as difficult as it sounds.