Maintains the specifications for XML itself.
- XML 1.0
- Namespaces in XML 1.0
- XML Base
- XML Information Set
<p:activity xmlns:p='http://www.w3.org/Consortium'
xml:base='http://www.w3.org/'>
<p:name>XML Activity</p:name>
<p:location uri='XML/'/>
</p:activity>