% Leading comments here

\documentclass[% Options of scrbook
  %
  % draft,
  fontsize=12pt,
  % smallheadings,
  headings=big,
  english,
  paper=a4,
  twoside,
  open=right,
  DIV=14,
  BCOR=20mm,
  headinclude=false,
  footinclude=false,
  mpinclude=false,
  % pagesize,
  titlepage,
  parskip=half,
  headsepline,
  chapterprefix=false,
  appendixprefix=Appendix,
  appendixwithprefixline=true,
  bibliography=totoc,
  toc=graduated,
  numbers=noenddot,
]{scrbook}

\begin{document}

Hello, world!

\end{document}
