Open-Advice.sty

\newif\ifusinght
\makeatletter
\@ifundefined{HCode}{\usinghtfalse}{\usinghttrue}
\makeatother

\newcommand{\authorbio}[1]{\vspace{-14pt}\noindent\textit{#1}\vspace{14pt}\noindent}
\usepackage{ifthen}
\ifusinght
  \newcommand*{\chapterwithauthor}[3][\empty]{%
    \ifthenelse{\equal{#1}{\empty}}
    {\chapter{#3}{#2}}%
    {\chapter[#1]{#3}{#2}}%
  }
\else
\renewcommand*{\chaptermarkformat}{}
\renewcommand*{\chapterheadstartvskip}{\vspace*{0.5\baselineskip}}
\renewcommand*{\chapterheadendvskip}{\vspace*{1\baselineskip}}
\makeatletter
\newcommand*{\chapterwithauthor}[3][\empty]{%
  \ifthenelse{\equal{#1}{\empty}}
  {\gdef\chapterauthor{#2}\chapter{#3}}%
  {\gdef\chapterauthor{#2}\chapter[#1]{#3}}%  
}
\renewcommand*{\chapterformat}{\thechapter\autodot\hskip 1pc}
\newlength{\authorindent}
\gdef\chapterauthor{}
\renewcommand*{\chapterheadendvskip}{%
  \ifx\chapterauthor\@empty\else
  \markright{\chapterauthor}%
  \vskip\baselineskip\nobreak
  \settowidth{\authorindent}{{%
      \usekomafont{sectioning}\usekomafont{chapter}\chapterformat
    }}%
  \begin{flushright}\sffamily\hspace*{\authorindent}\chapterauthor\par\nobreak
    \global\let\chapterauthor\@empty\end{flushright}
  \fi
  \noindent\par\nobreak\vskip 2\baselineskip%
}
\fi