NZ XML Governance Framework for Interoperability

Standards New Zealand have issued three Draft Standards on electronic interoperability of information using XML for government systems: Commenrs close 09/05/2008:

1. XML Governance Framework: Principles
2. XML Governance Framework: Operational guide
3. XML Governance Framwork: Communities guide

It is not clear to me why NZ needs its own standards for XML interoperability, as this would make them non-interoperable with the rest of the world.