XML Linking - slide "XBase"

Provides equivalent functionality to HTML BASE element

  <?xml version="1.0"?>
  <html xmlns="http://www.w3.org/TR/xhtml1/strict"
           xml:base="http://somewhere.org">
   <head>
      <title>Virtual Library</title>
   </head>
   <body>
     <p>See <a href="new.xml">what's new</a>!</p>
     <p>Check out the hot picks of the day!</p>
     <ol xml:base="/hotpicks">
       <li><a href="pick1.xml">Hot Pick #1</a></li>
       <li><a href="pick2.xml">Hot Pick #2</a></li>
     </ol>
   </body>
  </html>

"what's new" resolves to the URI "http://somewhere.org/new.xml"
"Hot Pick #1" resolves to the URI "http://somewhere.org/hotpicks/pick1.xml"
"Hot Pick #2" resolves to the URI "http://somewhere.org/hotpicks/pick2.xml"