HTML/CSS/Basic Attributes/urn
"urn" Uniform Resource Name (URN) for a target document
<source lang="html4strict">
<HTML> <head> <Title>Example For urn</Title> </head> <BODY> <a urn="wbex"
href="http://www.wbex.ru"> www.wbex.ru
</a> </BODY> </HTML>
</source>