We'll create fresh WordPress site with AJS Footnotes installed. You have 20 minutes to test the plugin after that site we'll be deleted.
This plugin allows an author to include footnotes in text by enclosing the note in doubled parenthesis ((Note.)) When the content is shown to the end user, the notes are removed from the text and included in the style of a footnote. Hovering over the footnote link will displays a popup with the footnotes content. Notes are also gathered and listed at the bottom of the page.