[SWC] section about symbol correspondence

Dear all,

As discussed at the face-to-face, I created a section [1] that explains 
the correspondence between symbols in RDF/OWL and RIF.
Any and all comments are welcome.

Best, Jos

[1] 
http://www.w3.org/2005/rules/wiki/SWC#Symbols_in_RIF_Versus_RDF.2FOWL_.28Informative.29
-- 
                          debruijn@inf.unibz.it

Jos de Bruijn,        http://www.debruijn.net/
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