desc of OWL Lite and OWL DL in RDF graph

I had a go;

if this is clearer than Peter's text I can work through what impact it has on 
the abstract syntax and mapping rules - it's not a lot, but it's not nothing 
either.

I think it is clearer.

The abstract syntax is important because that's what the semantic hangs off, 
and the concrete syntax is important because that's what most people end up 
having to understand.
If this description of the concrete syntax is intelligible then making a few 
semantically neutral adjustments to the abstract syntax and mapping rules is 
justified.

Jeremy