\begin_header
\textclass scrbook
\begin_preamble
-% enable calculations
+% enables calculations
\usepackage{calc}
-% increase the bottom float placement fraction
+% increases the bottom float placement fraction
\renewcommand{\bottomfraction}{0.5}
\end_preamble
\options intoc,bibliography=totoc,index=totoc,BCOR10mm,captions=tableheading,titlepage,fleqn