Node:Footnote Commands, Next:Footnote Styles, Up:Footnotes
In Texinfo, footnotes are created with the @footnote command.
This command is followed immediately by a left brace, then by the text
of the footnote, and then by a terminating right brace. Footnotes may
be of any length (they will be broken across pages if necessary), but
are usually short. The template is:
ordinary text@footnote{text of footnote}
As shown here, the @footnote command should come right after the
text being footnoted, with no intervening space; otherwise, the footnote
marker might end up starting a line.
For example, this clause is followed by a sample footnote1; in the Texinfo source, it looks like
this:
...a sample footnote@footnote{Here is the sample
footnote.}; in the Texinfo source...
As you can see, the source includes two punctuation marks next to each
other; in this case, .}; is the sequence. This is normal (the
first ends the footnote and the second belongs to the sentence being
footnoted), so don't worry that it looks odd.
In a printed manual or book, the reference mark for a footnote is a small, superscripted number; the text of the footnote appears at the bottom of the page, below a horizontal line.
In Info, the reference mark for a footnote is a pair of parentheses
with the footnote number between them, like this: (1). The
reference mark is followed by a cross-reference link to the footnote's
text.
In the HTML output, footnote references are marked with a small, superscripted number which is rendered as a hypertext link to the footnote text.
By the way, footnotes in the argument of an @item command for a
@table must be on the same line as the @item
(as usual). See Two-column Tables.