% (The MIT License)
%
% Copyright (c) 2021 Yegor Bugayenko
%
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% IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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\documentclass{../yb-book}
\renewcommand*\thetitle{\LaTeX{} Class yb-book}
\renewcommand*\theauthor{Yegor Bugayenko}
\begin{document}

\ybPrintTitlePage

\newpage

\chapter{Overview}

\section{Purpose}

\index{computer}
This is a very interesting book about computers.

\ybPrintIndex

\end{document}