Numbers as section labels
The labels for sections are currently derived from the section's title (e.g. Titel der Sektion leads to \label{sec:titel_der_sektion
}). That makes it harder to proof read the documents from the source code (e.g. \ref{sec:titel_der_sektion
} would be rendered as § No., so you have to look at the corresponding label or the rendered document which is somehow time consuming) and setting the reference is even harder, because you have to copy&paste the labels. So it could be better to change all labels to the corresponding §'s or article's number (e.g. \label{sec:No.}
) which already done by the para
macro.