groff: ms Footnotes
4.3.5.10 Footnotes
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The 'ms' macro package has a flexible footnote system. You can specify
either numbered footnotes or symbolic footnotes (that is, using a marker
such as a dagger symbol).
-- String: \*[*]
Specifies the location of a numbered footnote marker in the text.
-- Macro: .FS
-- Macro: .FE
Specifies the text of the footnote. The default action is to
create a numbered footnote; you can create a symbolic footnote by
specifying a "mark" glyph (such as '\[dg]' for the dagger glyph) in
the body text and as an argument to the 'FS' macro, followed by the
text of the footnote and the 'FE' macro.
You can control how 'groff' prints footnote numbers by changing the
value of the 'FF' register. ⇒ms Document Control Registers.
Footnotes can be safely used within keeps and displays, but you
should avoid using numbered footnotes within floating keeps. You can
set a second '\**' marker between a '\**' and its corresponding '.FS'
entry; as long as each 'FS' macro occurs _after_ the corresponding '\**'
and the occurrences of '.FS' are in the same order as the corresponding
occurrences of '\**'.