%%
%% The LaTeX Companion, 3ed
%%
%% Example 3-5-39 on page I-230 in "enotez --- Endnotes, an alternative to 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{159.0pt}
\setlength\parindent{0pt}
% for the book examples we shorten the vertical spaces
\makeatletter
\renewcommand\section{\@startsection{section}{1}{\z@}%
{-1.25ex \@plus-1ex \@minus-.2ex}%
{.5ex}%
{\normalfont\large\bfseries}}
\makeatother
%StartShownPreambleCommands
\usepackage{enotez}
%StopShownPreambleCommands
\begin{document}
This is text.\endnote{The first\endnote{A nested
note\ldots\endnote{\ldots which itself
contains a note.}} endnote.\endnote{Another
second-level note with more text to show its
formatting in the note section.}}
And this is more text.\endnote{The third
endnote.\endnote{Also with a second-level note.}}
\printendnotes[itemize]
\end{document}