%%
%% The LaTeX Companion, 3ed
%%
%% Example 4-1-1 on page I-254 in "Customizing the \protect \nxLenv  {itemize} list environment".
%%
%% 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{135.0pt}
%StartShownPreambleCommands
  \usepackage{pifont}
  \newenvironment{myitemize}
     {\renewcommand\labelitemi{\ding{43}}\begin{itemize}}
     {\end{itemize}}
%StopShownPreambleCommands

\begin{document}
  \begin{myitemize}
  \item Text of the first item in the list.
  \item Text of the first paragraph in the second
        item of the list.

        The second paragraph of the item.
  \item Text of the third item.
  \end{myitemize}
\end{document}