<FOOTNOTE> and <MARGIN> are part of the HTML+ spec, and are actually pretty
nifty. All the HTML inside the footnote or margin note gets stashed away by
the browser and a footnote marker (e.g. [*]) that looks like an anchor put in
its place. When the user clicks on the footnote marker, the contents of the
footnote or margin note get displayed in a pop-up window.
I've got these working just fine, and it's pretty cool. Saves having links to
all those tiny files, and allows the note to be viewed at the same time as the
context to which it applies.
Relay Technology, Inc.