\section in order to formate my file.
The problem is now, that
\section just countrs from 1 to n. But what I actually need is the sections counting from 1.1 to 1.n, and then, after the second
\part start over as 2.1 to 2.m.
\section instead of
\subsection because of the fontsize.
If there is a possibility to have
\section displayed as large as
\subsection as large as
\section, this would also be a way to solve the problem.