abstract preamble and "guide to documents" (LCC 10, ...)

Hi:

I have put together a revised abstract preamble that does not define OWL
2 as a diff from OWL 1 (as suggested by Ivan).  I've also put together a
terse document guide that could go at the beginning of documents.  

I've put both of these up in the drafting area for LC comment 10, at

http://www.w3.org/2007/OWL/wiki/LC_Responses/IH2

peter