if I would like to transcribe a source document inside of <sourceDoc>
because I am interested in its physical realization, how can I represent
text parts or zones that "look like" headings, paragraphs or lists, for
Would those simply be zones (maybe typed somehow) and list items with
labels marked up as single lines or as segments?
Why is it not possible to use the corresponding structural elements
inside of <surface> or <zone>?