marginnote
Marginal notes without the float behaviour of \marginpar — usable inside floats and footnotes.
In LaTeX, the command \marginpar[⟨left⟩]{⟨right⟩} can be used to create a
marginal note. It has one drawback though: it creates a special kind of
float. As a result, it cannot be used inside floats or footnotes.
The package marginnote provides an additional command \marginnote for
creating margin notes. It does not use any floats and therefore avoids the
disadvantages of \marginpar. There are however other drawbacks listed
either in the user manual or in the issue tracker.
marginnote originated from a question on the
TeX-D-L mailing list and
some macros that had been written shortly before for a book project. The
package was flagged as experimental from the start. An alternative is, for
example, the package
marginalia.
The package is hosted on Codeberg. See the CTAN catalogue entry for more.