Used as a container element for metadata about a product (such as a book, software package, hardware component, website, etc.) that is discussed in a <note>
This element (<product>) has been significantly remodeled in version 3.0 of the Tag Set. The values and/or usage in version 3.0 are not backward-compatible with that in previous versions of the Tag Set. Specifically, in prior versions the <product> element was allowed to contain the <page-count> element, now replaced by the <size> element.
<!ELEMENT product (#PCDATA %product-elements;)* >
(#PCDATA | inline-supplementary-material | related-article | related-object | break | bold | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | strike | underline | underline-start | underline-end | alternatives | inline-graphic | private-char | chem-struct | inline-formula | abbrev | milestone-end | milestone-start | named-content | styled-content | price | annotation | article-title | chapter-title | collab | comment | conf-date | conf-loc | conf-name | conf-sponsor | date | date-in-citation | day | edition | email | elocation-id | etal | ext-link | fpage | gov | institution | isbn | issn | issue | issue-id | issue-part | issue-title | lpage | month | name | object-id | page-range | part-title | patent | person-group | pub-id | publisher-loc | publisher-name | role | season | series | size | source | std | string-name | supplement | trans-source | trans-title | uri | volume | volume-id | volume-series | year | fn | target | xref | sub | sup)*
Any combination of:
... <ref-list> ... <ref> <note> <product> <name><surname>Lapeyre</surname> <given-names>Deborah A.</given-names> </name> <name><surname>Usdin</surname> <given-names>B. Tommie</given-names> </name> <source>Wildflowers of the Washington Area</source> <year>2002</year> <publisher-name>Lippman, Ltd.</publisher-name> <publisher-loc>Bethesda, MD</publisher-loc> <isbn>0-23-8675-309</isbn>, includes a CD-ROM, <price>$19.95</price> (Used 12.50 when available) </product> </note> </ref> </ref-list> ...