%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-5-11 on page I-213 in "footmisc --- Various footnotes styles".
%%
%% Copyright (C) 2022 Frank Mittelbach
%%
%% It may be distributed and/or modified under the conditions
%% of the LaTeX Project Public License, either version 1.3c
%% of this license or (at your option) any later version.
%%
%% See https://www.latex-project.org/lppl.txt for details.
%%

\documentclass{tlc3exa}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{195.0pt}
\setlength\textheight{6.5\baselineskip}
\addtolength\textwidth{-45pt}
\setlength\marginparwidth{30pt}

%StartShownPreambleCommands
\usepackage[side,flushmargin]{footmisc}
%StopShownPreambleCommands

\begin{document}
Some text with a footnote.\footnote{A first.}
A lot of additional text here with a
footnote.\footnote{A second.} Even more text
and then another footnote.\footnote{A third.}
Some more text.\footnote{A fourth.} A lot
of additional lines of text here to fill up
the space on the left.
\end{document}