%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-5-5 on page I-207 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{3.2\baselineskip}
%StartShownPreambleCommands

%StopShownPreambleCommands

\begin{document}
Some\footnote{A sample\footnotemark{}
footnote.}\footnotetext{A subfootnote.}
text and some more text.
\end{document}