%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-5-2 on page I-206 in "Using standard footnotes".
%%
%% 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{183.0pt}
\setlength\textheight{12\baselineskip}
%StartShownPreambleCommands

%StopShownPreambleCommands

\begin{document}
\noindent\ldots{} main text \ldots
\begin{center}
 \begin{minipage}{.8\linewidth}
  Footnotes in a minipage are numbered using
  lowercase letters.\footnote{Inside minipage}
  \par This text references a footnote at the
  bottom of the page.\footnotemark{}
  And another\footnote{Inside again} note.
 \end{minipage}\footnotetext{At bottom of page}
\end{center}
\ldots{} main text \ldots
\end{document}