% \iffalse meta-comment
% SPDX-FileCopyrightText: Copyright (c) 2021-2026 Yegor Bugayenko
% SPDX-License-Identifier: MIT
% \fi

%%% \CheckSum{0}
%
% \CharacterTable
%  {Upper-case    \A\B\C\D\E\F\G\H\I\J\K\L\M\N\O\P\Q\R\S\T\U\V\W\X\Y\Z
%   Lower-case    \a\b\c\d\e\f\g\h\i\j\k\l\m\n\o\p\q\r\s\t\u\v\w\x\y\z
%   Digits        \0\1\2\3\4\5\6\7\8\9
%   Exclamation   \!     Double quote  \"     Hash (number) \#
%   Dollar        \$     Percent       \%     Ampersand     \&
%   Acute accent  \'     Left paren    \(     Right paren   \)
%   Asterisk      \*     Plus          \+     Comma         \,
%   Minus         \-     Point         \.     Solidus       \/
%   Colon         \:     Semicolon     \;     Less than     \<
%   Equals        \=     Greater than  \>     Question mark \?
%   Commercial at \@     Left bracket  \[     Backslash     \\
%   Right bracket \]     Circumflex    \^     Underscore    \_
%   Grave accent  \`     Left brace    \{     Vertical bar  \|
%   Right brace   \}     Tilde         \~}

% \GetFileInfo{yb-book.dtx}
% \DoNotIndex{\end,\empty,\defined,\def,\begin,\if,\isempty,\endgroup,\begingroup,\let,\else,\fi,\newcommand,\newenvironment}

% \iffalse
%<*driver>
\ProvidesFile{yb-book.dtx}
%</driver>
%<class>\NeedsTeXFormat{LaTeX2e}
%<class>\ProvidesClass{yb-book}
%<*class>
[2026-05-03 0.8.0 YB Branded Book Style]
%</class>
%<*driver>
\documentclass{ltxdoc}
\usepackage{paratype}
\usepackage{microtype}
  \microtypesetup{verbose=false}
  \AddToHook{env/verbatim/begin}{\microtypesetup{protrusion=false}}
\usepackage{href-ul}
\usepackage{graphicx}
\PageIndex
\EnableCrossrefs
\CodelineIndex
\RecordChanges
\begin{document}
	\DocInput{yb-book.dtx}
	\PrintChanges
	\PrintIndex
\end{document}
%</driver>
% \fi

% \title{\includegraphics[width=0.75in]{yb-book-logo.pdf} \\ \LaTeX{} Class |yb-book|\thanks{The sources are in GitHub at \href{https://github.com/yegor256/yb-book.cls}{yegor256/yb-book.cls}}}
% \author{Yegor Bugayenko \\ \texttt{yegor256@gmail.com}}
% \date{\filedate, \fileversion}
%
% \maketitle
%
% \section{Introduction}
%
% \index{Amazon}
% The provided class |yb-book| helps me design
% \href{https://www.yegor256.com/books.html}{my books} and
% publish them
% \href{https://www.amazon.com/Yegor-Bugayenko/e/B01AM1QMDK}{on Amazon}.
% You are welcome to use it for your own books. It is as simple
% as this:
%\iffalse
%<*verb>
%\fi
\begin{verbatim}
\documentclass{yb-book}
\renewcommand*\thetitle{New Book About OOP}
\renewcommand*\theauthor{Jeff Lebowski}
\renewcommand*\thevolume{1}
\renewcommand*\theversion{1.0}
\begin{document}
\ybPrintTitlePage
\chapter{First One}
\section{About Something Interesting}
Hello, world!
\end{document}
\end{verbatim}
%\iffalse
%</verb>
%\fi

% You are welcome to suggest additional options and commands, but the style
% of my books is intentionally as simple as possible, avoiding formatting
% as much as possible. Here is \href{https://www.yegor256.com/2019/05/21/dont-improvise.html}{why}.

% \section{Options}

% There are a few class options you can use:

% \begin{macro}{compact}
% Use this package option when you need to make text more compact
% and take less vertical space. This may be convenient for fiction books.
% I use this option to render \href{https://www.yegor256.com/code-ahead.html}{Code Ahead} book.
% \end{macro}

% \begin{macro}{sparse}
% With this package option every section will start from a new page.
% \end{macro}

% \begin{macro}{manuscript}
% When the format is not for Amazon printing,
% but for some other purposes (the page size is A4), this option may be
% convenient. I also use it when I want the book to be rendered for
% printing on paper for review purposes.
% \end{macro}

% \begin{macro}{authordraft}
% \changes{v0.4.0}{2024/03/23}{The package option \texttt{draft} renamed to \texttt{authordraft}}
% When it's a draft for reviewers (the page size is A4)
% and you want to have a watermark and a compact form of the content. This
% option goes together with |\thereviewer{}| command, which you may redefine,
% in order to embed the name of the reviewer in the watermark. This may
% help you prevent theft of your book:
%\iffalse
%<*verb>
%\fi
\begin{verbatim}
\documentclass[authordraft]{yb-book}
\renewcommand*\thereviewer{Walter Sobchak}
\begin{document}
Hello, world!
\end{document}
\end{verbatim}
%\iffalse
%</verb>
%\fi
% \end{macro}

% \section{Meta Commands}

% There are a number of commands that you may redefine in the preamble:
%\iffalse
%<*verb>
%\fi
\begin{verbatim}
\documentclass{yb-book}
\newcommand*\thetitle{My New Book About OOP}
\newcommand*\theauthor{Yegor Bugayenko}
\newcommand*\thevolume{1}
\newcommand*\thedate{24 Feb 2022}
\newcommand*\theversion{1.4}
\newcommand*\thereviewer{Jeff Lebowski}
\begin{document}
... the content goes here ...
\end{document}
\end{verbatim}
%\iffalse
%</verb>
%\fi

% \section{Printers}

% There are a number of printers --- commands that print large blocks of text
% in the expected format:

% \begin{macro}{\ybPrintTitlePage}
% Prints the first page of a book. It expects at least |\thetitle|
% and |theauthor| to be defined:
%\iffalse
%<*verb>
%\fi
\begin{verbatim}
\documentclass{yb-book}
\renewcommand*\thetitle{My New Book}
\renewcommand*\theauthor{Yegor Bugayenko}
\begin{document}
\ybPrintTitlePage
.. the rest of the book goes here
\end{document}
\end{verbatim}
%\iffalse
%</verb>
%\fi
% \end{macro}

% \begin{macro}{\ybPrintTOC}
% Prints the table of contents.
% \end{macro}

% \begin{macro}{\ybQuote}
% Prints a side quote:
%\iffalse
%<*verb>
%\fi
\begin{verbatim}
\documentclass{yb-book}
\begin{document}
Hello, world!
\ybQuote{Never tell the truth to people who
  are not worthy of it}{Mark Twain}{}
\end{document}
\end{verbatim}
%\iffalse
%</verb>
%\fi
% \end{macro}

% \begin{macro}{\ybPrintBibliography}
% Prints the list of bib references.
% \end{macro}

% \begin{macro}{\ybPrintIndex}
% Prints index with an optional name of the section (instead of ``Index''):
%\iffalse
%<*verb>
%\fi
\begin{verbatim}
\documentclass{yb-book}
\begin{document}
Hello, world!
\ybPrintIndex{Recommended Books}
\end{document}
\end{verbatim}
%\iffalse
%</verb>
%\fi
% \end{macro}

% \StopEventually{}

% \section{Implementation}

% \changes{v0.1.0}{2022/01/09}{Initial version}
% \changes{v0.2.0}{2022/10/02}{Started using l3build}

% First, we parse package options:
% \changes{v0.3.0}{2023/05/22}{The \texttt{pgfopts} package is now used to parse package options.}
% \changes{v0.5.0}{2024/01/02}{The \texttt{sparse} package option added, to place every section in a new page.}
% \changes{v0.6.0}{2025/01/08}{The \texttt{apa} package option added, to enable APA citation style.}
% \changes{v0.7.0}{2025/12/14}{The \texttt{colored} package option added, to enable colors.}
%    \begin{macrocode}
\RequirePackage{pgfopts}
\pgfkeys{
  /yb/.cd,
  apa/.store in=\yb@apa,
  authordraft/.store in=\yb@authordraft,
  compact/.store in=\yb@compact,
  manuscript/.store in=\yb@manuscript,
  colored/.store in=\yb@manuscript,
  sparse/.store in=\yb@sparse,
}
\ProcessPgfPackageOptions{/yb}
%    \end{macrocode}

% Then, depending on the options like |authordraft| and |manuscript|, we preset
% options of the class |book| and then load it:
%    \begin{macrocode}
\makeatletter
\ifdefined\yb@authordraft
  \PassOptionsToClass{11pt}{book}
  \PassOptionsToClass{oneside}{book}
\else
  \ifdefined\yb@manuscript
    \PassOptionsToClass{12pt}{book}
    \PassOptionsToClass{oneside}{book}
  \else
    \PassOptionsToClass{11pt}{book}
    \PassOptionsToClass{twoside}{book}
  \fi
\fi
\makeatother
\LoadClass{book}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/href-ul}{href-ul} to underline links correctly:
%    \begin{macrocode}
\RequirePackage{href-ul}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/cleveref}{cleveref} for the |\cref| command:
% \changes{v0.7.0}{2025/07/06}{Added \texttt{cleveref} package for the \texttt{\char`\\cref} command.}
%    \begin{macrocode}
\PassOptionsToPackage{capitalize}{cleveref}
\RequirePackage{amsmath}
\RequirePackage{cleveref}
  \crefformat{section}{\S#2#1#3}
%    \end{macrocode}

% Then, we require XeTeX or LuaTeX, because the class sets
% \href{https://ctan.org/pkg/cm-unicode}{CMU Concrete} as the default main
% font through \href{https://ctan.org/pkg/fontspec}{fontspec}, which only
% works under those engines. If the document is compiled with pdfTeX, we
% stop with an explicit error rather than fall back silently. We pass the
% OTF file names directly to |\setmainfont| so that |kpathsea| locates them
% inside the TeX tree, without relying on a system-wide fontconfig database
% (which is absent in many CI containers):
% \changes{v0.5.1}{2025/01/05}{Added the usage of \texttt{inputenc} in order to ensure UTF-8 encoding for the sources.}
% \changes{v0.8.0}{2026/05/03}{CMU Concrete is now the default main font; the class requires XeTeX or LuaTeX and aborts under pdfTeX.}
%    \begin{macrocode}
\RequirePackage{iftex}
\ifPDFTeX
  \ClassError{yb-book}%
    {This class requires XeTeX or LuaTeX}%
    {Compile with xelatex or lualatex; pdflatex is not supported.}%
  \endinput
\fi
\RequirePackage{fontspec}
\setmainfont{cmunorm.otf}[
  BoldFont = cmunobx.otf,
  ItalicFont = cmunoti.otf,
  BoldItalicFont = cmunobi.otf,
]
%    \end{macrocode}

% \begin{macro}{geometry}
% Then, using |geometry|, we setup page layout:
%    \begin{macrocode}
\RequirePackage{geometry}
\geometry{
  paperwidth=6in, paperheight=9in,
  bindingoffset=0.25in,
  left=0.75in, right=0.75in, top=0.75in, bottom=1.25in}
\makeatletter
\ifdefined\yb@authordraft
  \geometry{a4paper, margin=1in, left=1.5in}
\else
  \ifdefined\yb@manuscript
    \geometry{a4paper, margin=1.2in}
  \fi
\fi
\makeatother
%    \end{macrocode}
% \end{macro}

% Then, we load \href{https://ctan.org/pkg/anyfontsize}{anyfontsize} to enable all sizes of fonts:
%    \begin{macrocode}
\RequirePackage{anyfontsize}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/tikz}{tikz} for graphics:
%    \begin{macrocode}
\RequirePackage{tikz}
  \usetikzlibrary{positioning}
  \usetikzlibrary{shapes}
  \usetikzlibrary{fit}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/chngcntr}{chngcntr} for something else:
%    \begin{macrocode}
\RequirePackage{chngcntr}
  \counterwithout{footnote}{chapter}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/lastpage}{lastpage} to enable rendering of the last page number:
%    \begin{macrocode}
\RequirePackage{lastpage}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/paralist}{paralist} for inline enumeration:
%    \begin{macrocode}
\RequirePackage{paralist}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/xcolor}{xcolor} for colors:
%    \begin{macrocode}
\RequirePackage{xcolor}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/graphicx}{graphicx} to enable graphic files inclusion:
%    \begin{macrocode}
\RequirePackage{graphicx}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/enumitem}{enumitem} for inline enumeration:
%    \begin{macrocode}
\PassOptionsToPackage{inline}{enumitem}
\RequirePackage{enumitem}
  \setlist{nosep}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/float}{float} for floating figures:
%    \begin{macrocode}
\RequirePackage{float}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/xfp}{xfp} and
% \href{https://ctan.org/pkg/xifthen}{xifthen} for if-then-else:
%    \begin{macrocode}
\RequirePackage{xfp}
\RequirePackage{xifthen}
%    \end{macrocode}

% Then, we load \href{https://ctan.org/pkg/csquotes}{csquotes} for better rendering:
%    \begin{macrocode}
\PassOptionsToPackage{autostyle=try}{csquotes}
\RequirePackage{csquotes}
%    \end{macrocode}

% \begin{macro}{\pagestyle}
% Then, we set the layout of a page to |plain|:
%    \begin{macrocode}
\pagestyle{plain}
%    \end{macrocode}
% \end{macro}

% \begin{macro}{setspace}
% Then, using |setspace| package we set the spacing between lines in the text,
% depending on the package options:
%    \begin{macrocode}
\RequirePackage{setspace}
  \setstretch{1.2}
  \makeatletter
  \ifdefined\yb@compact\setstretch{1.0}\fi
  \ifdefined\yb@manuscript\setstretch{1.1}\fi
  \ifdefined\yb@authordraft\setstretch{1.4}\fi
  \makeatother
%    \end{macrocode}
% \end{macro}

% \begin{macro}{biblatex}
% Then, we configure |biblatex|, for citation management:
%    \begin{macrocode}
\PassOptionsToPackage{indexing=cite,
  natbib=true,maxnames=2,minnames=1,doi=true,
  url=false,isbn=false}{biblatex}
\makeatletter
\ifdefined\yb@apa
  \PassOptionsToPackage{style=authoryear}{biblatex}
\else
  \PassOptionsToPackage{style=numeric}{biblatex}
\fi
\makeatother
\RequirePackage{doi}
\RequirePackage{biblatex}
  \DeclareCiteCommand{\citetitle}
    {\boolfalse{citetracker}%
     \boolfalse{pagetracker}%
     \usebibmacro{prenote}}
    {\ifciteindex
       {\indexnames{labelname}}
       {}%
     \printfield[citetitle]{labeltitle}}
    {\multicitedelim}
    {\usebibmacro{postnote}}
  \DeclareCiteCommand*{\citetitle}
    {\boolfalse{citetracker}%
     \boolfalse{pagetracker}%
     \usebibmacro{prenote}}
    {\ifciteindex
       {\indexnames{labelname}}
       {}%
     \printfield[citetitle]{title}}
    {\multicitedelim}
    {\usebibmacro{postnote}}
%    \end{macrocode}
% \end{macro}

% \begin{macro}{condensed}
% Then, we define |condensed| environment for snippets:
%    \begin{macrocode}
\newenvironment{condensed}
  {\begingroup\setstretch{1.0}}
  {\endgroup}
%    \end{macrocode}
% \end{macro}

% \begin{macro}{microtype}
% Then, we include |microtype| for better rendering:
%    \begin{macrocode}
\makeatletter
\ifdefined\yb@authordraft
  \PassOptionsToPackage{nopatch=footnote}{microtype}
\else
  \PassOptionsToPackage{nopatch=footnote,protrusion=true}{microtype}
\fi
\makeatother
\RequirePackage{microtype}
%    \end{macrocode}
% \end{macro}

% \begin{macro}{\section}
% Then, we redefine |\section| command:
%    \begin{macrocode}
\makeatletter
\let\yb@oldsection\section
\def\yb@secstart{\ifdefined\yb@sparse\newpage\fi}
\ifdefined\yb@authordraft
  \PassOptionsToPackage{medium}{titlesec}
  \RequirePackage{titlesec}
\else
  \PassOptionsToPackage{raggedright}{titlesec}
  \RequirePackage{titlesec}
    \titlespacing{\section}{0em}{2em}{1em}
  \renewcommand\section{\yb@secstart\yb@oldsection}
\fi
\ifdefined\yb@compact
  \renewcommand\section{\yb@secstart\vspace{2em}\yb@oldsection}
\fi
\makeatother
%    \end{macrocode}
% \end{macro}

% Then, if it's a |authordraft|, we put a watermark comment:
%    \begin{macrocode}
\makeatletter
\ifdefined\yb@authordraft
  \PassOptionsToPackage{absolute}{textpos}
  \RequirePackage{textpos}
    \TPGrid{16}{16}
  \RequirePackage{fancyhdr}
  \pagestyle{fancy}
  \renewcommand\headrulewidth{0em}
  \renewcommand\footrulewidth{0em}
  \setlength{\headheight}{3em}
  \fancyhf{}
  \fancyhead[L,C,LO,CO]{}
  \fancyhead[R,RO]{
    \begin{textblock}{16}[0.5,0.5](8,8)%
      \tikz \node[minimum width=16\TPHorizModule] {%
        \fontsize{64}{64}\selectfont\bfseries%
        \rotatebox{45}{
          \tikz \node
          [fill=gray!6, font=\ttfamily\color{white}]
          {it is a draft};%
        }%
      };%
    \end{textblock}%
    \begin{textblock}{4}(11.5,1)%
      \tikz \node [color=gray, rotate=270,
        font=\ttfamily\scriptsize, text width=24em] at (0,0) {%
        Copyright \textcopyright{} \the\year{} by \theauthor{}.
        All rights reserved. No part of the contents of
        this book may be reproduced or transmitted in any
        form or by any means without the written permission
        of the publisher. This particular manuscript is
        printed for \textbf{\thereviewer{}} and may be used only
        for one-time review. The manuscript has to be destroyed
        after the review.%
      };
    \end{textblock}
  }
  \fancyfoot[C,CO,C]{\small\ttfamily%
    page \thepage{} of \pageref{LastPage}}
\fi
\makeatother
%    \end{macrocode}

% \begin{macro}{\maketitle}
% Then, we redefine |\maketitle| command:
%    \begin{macrocode}
\renewcommand\maketitle{
  {\LARGE\textbf{\thetitle}}
  \\[1em]
  by \theauthor{}
  \\[4em]
  \ifx\thevolume\empty\else%
    Volume \thevolume{}\\
  \fi
  \ifx\thedate\empty\else%
    Rendered on \thedate{}
  \fi
  \ifx\theversion\empty\else%
    \\
    Ver. \theversion{}
  \fi
}
%    \end{macrocode}
% \end{macro}

% \begin{macro}{\ybPrintTitlePage}
% Then, we define |\ybPrintTitlePage| command:
%    \begin{macrocode}
\makeatletter
\newcommand\ybPrintTitlePage{
  \ifdefined\yb@authordraft\else
    \begin{titlepage}
      \ttfamily
      \vspace*{\fill}
      \noindent
      {\Huge\thetitle}
      \\[1em]
      by \theauthor{}
      \\[4em]
      \ifx\thevolume\empty\else%
        Volume \thevolume{}\\
      \fi
      \ifx\thedate\empty\else%
        \thedate{}
      \fi
      \ifx\thedate\empty\else%
        \\
        \theversion{}
      \fi
      \vspace*{\fill}
    \end{titlepage}
  \fi
}
\makeatother
%    \end{macrocode}
% \end{macro}

% \begin{macro}{\ybPrintTOC}
% Then, we define |ybPrintTOC| command to print table of contents:
%    \begin{macrocode}
\makeatletter
\newcommand\ybPrintTOC{%
  \ifdefined\yb@authordraft\else%
    \ifdefined\yb@compact\else\cleardoublepage\fi%
    {\setstretch{0.7}\tableofcontents}%
  \fi%
}
\makeatother
%    \end{macrocode}
% \end{macro}

% \begin{macro}{\ybPrintIndex}
% Then, we configure |imakeidx| package and define |\ybPrintIndex| command:
%    \begin{macrocode}
\RequirePackage{imakeidx}
  \renewbibmacro*{citeindex}{\indexnames{labelname}{}}
  \makeindex
  \indexsetup{othercode={\hyphenpenalty=10000}}
\makeatletter
\newcommand\ybPrintIndex[1][Index]{%
  \ifdefined\yb@authordraft\else%
    \ifdefined\yb@compact\else\cleardoublepage\fi%
    {%
      \setstretch{1.0}%
      \small%
      \addcontentsline{toc}{chapter}{#1}%
      \printindex%
    }%
  \fi%
}
\makeatother
%    \end{macrocode}
% \end{macro}

% \begin{macro}{\ybQuote}
% Then, with the help of |wrapfig| and |mdframed|, we define |\ybQuote| command:
%    \begin{macrocode}
\RequirePackage{wrapfig}
\RequirePackage{mdframed}
\RequirePackage{changepage}
  \strictpagecheck
\mdfdefinestyle{quoteodd}{backgroundcolor=black!0,
  leftmargin=1em,rightmargin=0em,
  innerleftmargin=1em,innerrightmargin=0em,
  innertopmargin=0em,innerbottommargin=0em,
  skipabove=0em,skipbelow=0em,
  linewidth=.2em,
  topline=false,bottomline=false,rightline=false}
\mdfdefinestyle{quoteeven}{backgroundcolor=black!0,
  rightmargin=1em,leftmargin=0em,
  innerrightmargin=1em,innerleftmargin=0em,
  innertopmargin=0em,innerbottommargin=0em,
  skipabove=0em,skipbelow=0em,
  linewidth=.2em,
  topline=false,bottomline=false,leftline=false}
\makeatletter
\newcommand\ybQuote[3]{%
  \ifthenelse{\isempty{#3}}{}{
    \ifx\hfuzz#2\hfuzz%
      \index{#3}%
    \else%
      \index{#3, #2}%
    \fi%
  }%
  \def\yb@body{%
    \raggedright%
    \ifx\hfuzz#3\hfuzz%
      #1%
    \else%
      ``#1''\\\raggedleft---#2 #3%
    \fi%
  }
  \ifdefined\yb@authordraft%
    \begin{wrapfigure}{r}{0.4\textwidth}%
      \begin{mdframed}[style=quoteodd]%
        \yb@body%
      \end{mdframed}%
    \end{wrapfigure}%
  \else%
    \begin{wrapfigure}{o}[2em]{0.4\textwidth}%
      \sffamily\checkoddpage%
      \ifoddpage%
        \begin{mdframed}[style=quoteodd]\yb@body\end{mdframed}%
      \else%
        \begin{mdframed}[style=quoteeven]\yb@body\end{mdframed}%
      \fi%
      \vspace{-2em}
    \end{wrapfigure}%
  \fi%
}
\makeatother
%    \end{macrocode}
% \end{macro}

% Then, we use and configure |footmisc| as suggested
% \href{https://tex.stackexchange.com/questions/40072/incompatibility-between-footmisc-option-multiple-and-hyperref/62091#62091}{here}:
%    \begin{macrocode}
\RequirePackage{perpage}
\PassOptionsToPackage{bottom,perpage,multiple}{footmisc}
\RequirePackage{footmisc}
\makeatletter
  \let\yb@oldfootnote\footnote
\newcommand\yb@nexttoken\relax
\newcommand\yb@isfootnote{%
  \ifx\footnote\yb@nexttoken\textsuperscript{,}\fi}
\renewcommand\footnote[1]{%
  \yb@oldfootnote{#1}\futurelet\yb@nexttoken\yb@isfootnote}
\makeatother
%    \end{macrocode}

% \begin{macro}{\ybPrintBibliography}
% Then, we define |\ybPrintBibliography|, to print a list of references:
% \changes{v0.6.2}{2025/01/19}{The \texttt{\char`\\ybPrintBibliography} command has an optional argument, which is the title of the chapter.}
%    \begin{macrocode}
\makeatletter
\newcommand\ybPrintBibliography[1][Bibliography]{%
  \AtNextBibliography{\small}%
  \raggedright%
  \ifdefined\yb@manuscript%
    \setlength\bibitemsep{0em}%
    \newpage%
    \begin{multicols}{2}%
      {\setstretch{1.0}\printbibliography}%
    \end{multicols}%
  \else%
    \setlength\bibitemsep{.2em}%
    \ifdefined\yb@compact\@openrightfalse\fi%
    \@openrightfalse%
    \printbibliography[heading=bibintoc,title={#1}]%
    \ifdefined\yb@compact\@openrighttrue\fi%
  \fi%
}
\makeatother
%    \end{macrocode}
% \end{macro}

% \begin{macro}{\highlight}
% Then, we define the |\highlight| command:
% \changes{v0.7.0}{2025/11/30}{The \texttt{\char`\\highlight} command was added.}
%    \begin{macrocode}
\newcommand\highlight[1]{%
  \tikz[baseline=(text.base)] {
    \node[inner sep=0em, outer sep=0em] (text) {%
      {\ifdefined\yb@colored\color{orange}\fi#1}};
    \begin{scope}
      \path[use as bounding box] (text.east) rectangle (text.west);
      \draw[decorate,
        decoration={random steps, amplitude=0.05em, segment length=0.3em},
        line join=round,
        line cap=round,
        line width=.08em,
        draw=gray!80] ($(text.west) + (-0.2em, -.46em)$) rectangle ($(text.east) + (+0.2em, -.46em)$);
    \end{scope}
  }%
}
%    \end{macrocode}
% \end{macro}

% Then, a few layout configurations at the beginning of the document:
% \changes{v0.6.6}{2025/07/06}{Penalties for widows and clubs specified.}
%    \begin{macrocode}
\makeatletter
\AtBeginDocument{%
  \raggedbottom%
  \ifdefined\yb@authordraft%
    \raggedright%
  \fi%
  \setlength\topskip{0em}%
  \setlength\parindent{0em}%
  \setlength\fboxsep{0em}%
  \setlength\parskip{.5em}%
  \exhyphenpenalty=10000% to avoid line breaks before and after mdash
  \widowpenalty=10000% to have less widows
  \clubpenalty=10000% to have less orphans
  \interfootnotelinepenalty=10000% to format footnotes better
}
\makeatother
%    \end{macrocode}

% Finally, a few meta commands with default values:
%    \begin{macrocode}
\newcommand*\thetitle{\textbackslash{}thetitle}
\newcommand*\thevolume{}
\newcommand*\thedate{}
\newcommand*\theversion{\textbackslash{}theversion}
\newcommand*\theauthor{\textbackslash{}theauthor}
\newcommand*\thereviewer{\textbackslash{}thereviewer}

\endinput
%    \end{macrocode}

% \Finale

%\clearpage
%
%\PrintChanges
%\clearpage
%\PrintIndex
