The need for more than one series of footnotes is common in critical
editions (and other literary criticism), but occasionally arises in
other areas.
Of course, the canonical critical edition package,
edmac,
offers the facility, as does its LaTeX port, the
ledmac
package.
Multiple ranges of footnotes are offered to LaTeX users by the
manyfoot package. The package provides a fair array of
presentation options, as well. Another critical edition
ednotes package is built upon a basis that includes
manyfoot, as its mechanism for multiple sets of footnotes.
The
bigfoot package also uses
manyfoot as part of
its highly sophisticated structure of footnote facilities, which was
also designed to support typesetting critical editions.
This is FAQ version 3.27, released on 2013-06-07.