Thanks for the suggestion on the author plugin, but footnote is closer two what I need.
I guess I have two option-
modify footnote and footnotearea to do what I want
enclose each footnote in a div and use sytlesheets to try to make the reference obvious.
If I were to modify the plugins I would need to:
1. Make an option for how the numbers show, decimal, letter, roman numerals
2. Create a title for the footnotearea plugin, to allow a description of why type of footnote it is.
3. create an option in the footnote plugin to accept a variable to distinguish it from the rest.