Properties and classes are defined in slightly different ways between BIBO and DC Terms - see 'usage' issue 132 for details. For the sake of consistency between existing and new terms in BIBO, I propose that we use the following properties, as appropriate:

• rdfs:label for the human-readable "label"
• rdfs:comment for the definition
• rdf:type with owl:Class, owl:DatatypeProperty, or owl:ObjectProperty, as appropriate.
• rdfs:domain and rdfs:range for domain and range, as needed.
• rdfs:subClassOf or rdfs:subPropertyOf, as needed.
• rdfs:isDefinedBy with object "http://purl.org/ontology/bibo/"^^<http://www.w3.org/2001/XMLSchema#anyURI> subject possibly to future change as discussed in 'bibo' issues 3 and 4.
• dcterms:description with a scope note, if needed.
• I propose that we start using dcterms:issued for the date on which the BIBO term was first published, starting with the new properties and classes.

I paste below the descriptions of all BIBO terms we have approved to date and ask you to confirm that the term descriptions are complete. I have filled some obvious gaps, such as range of rdfs:Literal for dateRetracted. Please note if you think any more domains, ranges, subclasses or subproperty relations should be added.

If you have reservations about the systematic use of rdfs:isDefinedBy with a literal object of type xsd:anyURI (the BIBO style), please post your comments on BIBO issue 4.