\documentclass[finnish,a4]{seminar}

\include{slide-preamble}

\begin{document}

\slidepagestyle{sectslide}
\centerslidesfalse

\include{kurssimoniste/johdanto}
\include{kurssimoniste/istunto}
\include{kurssimoniste/tiedostot}
\include{kurssimoniste/komentotulkki}

\end{document}