Each form has a model that shows the data to be submitted:
<model xmlns="http://www.w3.org/2002/xforms" id="p1"
xmlns:xsd="http://www.w3.org/2001/XMLSchema" >
<instance>
<doughnuts xmlns="http://www.example.org/doughnuts/">
<quantity xsi:type="xsd:nonNegativeInteger"/>
</doughnuts>
</instance>
<submission>
We'll fill this in later...
</submission>
</model>
The single child element
of the instance
element is sent to the server.
The XML element sent to the server can have any well-formed structure and use any namespace.
In XHTML, this model
is contained in
the head
of the document.