Right, there must be (and always is, in my experience,) at least one 
unambiguous<br>
and comprehensive mapping between the lightweight markup and whatever<br>
XML-style tagging you want to declare. And, in many cases, more than 
one.<br>
But HTML is usually first. TeX would also qualify. It&#39;s permissible to 
have,<br>
for instance, light-weight markup for syntactic artifacts. There 
shouldn&#39;t be<br>
anything XML can do that can&#39;t map to your lwml. Worst case, just incorporate<br>
your HTML/XML/TeX directly.<br>
<br>
The lwml just uses conventions and smaller tags to make the markup<br>
readable and more easily editable.<br><br>If someone thinks this means dumbing-down the markup, then I think<br>they misunderstand the purpose and the execution.<br>