Sorry for following up my own post -- and mentioning one of the dreaded
'P' words -- but ...

Frank Mitchell wrote:
> One interesting bit is that [reStructured Text] indicates section titles
[using an underscore line]
> which a) only provides three levels (if I read it right),

.... which I didn't:

    There may be any number of levels of section titles, 

and
  
    Rather than imposing a fixed number and order of section title 
    adornment styles, the order enforced will be the order as 
    encountered. 

from the full spec at
http://docutils.sourceforge.net/spec/rst/reStructuredText.html

-- 
Frank Mitchell
frankm / bayarea.net

Please avoid sending me Word or PowerPoint attachments.
See http://www.fsf.org/philosophy/no-word-attachments.html