RE: [xml-dev] Modular schemas.

> 
> Unfortunately, this schema is invalid : It is illegal to 
> create an empty "optionalAttribute_elements" group.
> What is the correct way to define a group that contains 
> nothing? or just text?
> 

<xs:group name="optionalAttribute_elements">
  <xs:sequence/>
</xs:group>

Regards,

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