> this stylesheet:
> 
> <stylesheet version="1.0" 
> xmlns="http://www.w3.org/1999/XSL/Transform">
>   <template match="@*|node()">
>     <copy>
>       <apply-templates select="@*|node()"/>
>     </copy>
>   </template>
> </stylesheet>

Or more simply

<stylesheet version="1.0" xmlns="http://www.w3.org/1999/XSL/Transform">
  <template match="/"><copy-of select="."/></template>
</stylesheet>

Michael Kay
http://www.saxonica.com/