productnumber — A number assigned to a product
productnumber ::=
(text | phrase
db._phrase | replaceable
| Graphic inlines | Indexing inlines | Linking inlines | Ubiquitous inlines)*
A productnumber
identifies a “product
number” in some unspecified numbering scheme. It’s possible that
product numbers for different products might not even come from the same
scheme.
<article xmlns='http://docbook.org/ns/docbook' xmlns:xlink='http://www.w3.org/1999/xlink'> <title>Example productnumber</title> <para>You can order <citetitle>DocBook: The Definitive Guide</citetitle> directly from O'Reilly Media. Order product number <productnumber>978-0-596-80502-9</productnumber> by phone or <link xlink:href="http://www.oreilly.com/">on the Web</link>. </para> </article>