I do not know the right name for a "couillard" in English
http://fr.wikipedia.org/wiki/Couillard_(typographie), and maybe a better
term will be not as evocative as in French, but the thing is easy to
understand. For example an asterism ⁂ is probably the most common kind
What should be a good practice to encode them ? This separator is not
only an ornament but usually a logical separator between groups of
paragraphs, so the separator should be kept (but the figure could be
modified for a non imitative edition). The fast and easy way is to
encode it as a common paragraph.
<p rend="center"> *
Is there better ?