02_document_structure_numbers.tex

\begin{flushright}
\EOAemph{Oh, happy day (an epigraph)}
\end{flushright}

\EOAsection{This is the first section}
% \EOAlabel sets a label being used for cross references
\EOAlabel{numsec1}
This the first section of a text. It is preceded by two hierarchical
units, namely Part and Chapter. As you can see above, the chapter
command has two arguments, the first one being the running head which
is displayed in the header of each page, the second being the text
that is printed on the page where the chapter begins.

We offer two additional units below the section: the subsection and
the subsubsection. See below how they are displayed!

% \EOAsubsection starts a new and numbered section
\EOAsubsection{This is a subsection}
Here we are at an even lower hierarchical level. This can be quite
useful. Be aware that this level is not being displayed in the table
of contents. Now, there is still one level below that: the subsubsection.

% \EOAsubsection starts a new and numbered section
\EOAsubsubsection{A subsubsection}
A subsubsection will never be numbered and like its predecessor, it
will not show up in the table of contents.