RE: [xml-dev] Interesting XML ideas in oBIX

>         <e xsi:type="xs:integer">123</e>
> 
> You have asserted that <e> is an integer.  In particular, you 
> have asserted that its type is specifically the integer type 
> specified in the XML Schema Recommendation [2].  

Moreover, if the recipient doesn't trust the sender, they can put the
document through a schema validator to check that integer was the expected
or permitted type for element e.

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