productnumber.example.1.sgm   [plain text]

<!DOCTYPE para PUBLIC "-//OASIS//DTD DocBook V3.1//EN">
<para>
You an order <citetitle>DocBook: The Definitive Guide</citetitle> directly
from O'Reilly &amp Associates.  Order product number
<productnumber>5807</productnumber> by phone or 
<ulink url="http://www.oreilly.com/">over the web</ulink>.
</para>