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I'm looking at the RDFa mark-up for listing 6.6 which illustrates the use of the GoodRelations vocabulary. Though the prefix "gr:" is used I this listing, I can't find the declaration for it in the listing, though there are a number of other declarations in the opening body tag.

Is it just not there?
If not, how is the value of the "gr:" prefix known?
If I have overlooked it, please tell me where to find it.

Thank you.
david.wood (45) [Avatar] Offline
You are absolutely right! The correct namespace for the gr: prefix should be:

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