01_document_structure_nonumbers.tex

\EOAlabel{sec1}
Chapter, section and subsection can also be used without numbers. Do
you see the slight changes in the layout? Also, the counter is not
incremented. This can be used for forewords or introductions.

\EOAsectionnonumber{Section without numbers}
% \EOAlabel sets a label being used for cross references
\EOAlabel{sec1-1}
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. Structure your text wisely.

Now, a running head only makes sense if your chapter spreads across
several pages.

% \EOAsubsection starts a new and numbered section
\EOAsubsectionnonumber{Subsection without numbers}
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.