Change 18.807 xhtml:datatype from

The xhtml:datatype attribute specifies the data type of the object of an RDF statement. 18.907.

to
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The xhtml:datatype attribute specifies the RDF data type (see §5 of [RDF-CONCEPTS]) of the object of an RDF statement.
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Note: I don't think we need a reference to 18.907 here. If we want to keep it, shouldn't there be a "See" in front of it, since it is not preceded by an attribute name?

Further, change 18.810 xhtml:property from
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The xhtml:property attribute specifies a list of one or more IRIs. Each IRI is the predicate of an RDF statement for in content metadata. 18.907.
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to
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The xhtml:property attribute specifies a list of one or more CURIEs. Each CURIE is the predicate of an RDF statement for in content metadata. 18.907.

Notes on entry:

Change 18.807 xhtml:datatype from

The xhtml:datatype attribute specifies the data type of the object of an RDF statement. 18.907.

to
—
The xhtml:datatype attribute specifies the RDF data type (see §5 of [RDF-CONCEPTS]) of the object of an RDF statement.

• • done.
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Note: I don't think we need a reference to 18.907 here. If we want to keep it, shouldn't there be a "See" in front of it, since it is not preceded by an attribute name?

• • Actually I think the practice should be to simply list the link, without the "see" or similar language. May need to say something in 1.2 but given the literally thousands of cross-references, the usual introductory language doesn't add anything but length to the text.
    Further, change 18.810 xhtml:property from
    —
    The xhtml:property attribute specifies a list of one or more IRIs. Each IRI is the predicate of an RDF statement for in content metadata. 18.907.
    —
    to
    —
    The xhtml:property attribute specifies a list of one or more CURIEs. Each CURIE is the predicate of an RDF statement for in content metadata. 18.907.

Done.