%%
%% The LaTeX Companion, 3ed
%%
%% Example 2-2-6 on page I-39 in "quotchap, epigraph --- Mottos on chapters and sections".
%%
%% 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{tlc3exareport}
\pagestyle{empty}
\setcounter{page}{6}
\setlength\textwidth{207.0pt}
%StartShownPreambleCommands
\usepackage[avantgarde]{quotchap}
\renewcommand\chapterheadstartvskip
             {\vspace*{-5\baselineskip}}
% select TeX Gyre Heros for title and quote:
\usepackage{tgheros}
\renewcommand\sectfont{\sffamily\bfseries}
\renewcommand\quotefont{\sffamily\slshape}
\renewcommand\qauthorfont{\scshape}

%StopShownPreambleCommands

\begin{document}
\begin{savequote}[10pc]
 Cookies! Give me some cookies!
 \qauthor{Cookie Monster}
\end{savequote}
\chapter{A Package Test}
Adding this package changes the chapter
heading dramatically.
\end{document}