posted 12 years ago
I have never understood why anybody would want to do that. But I see this question a lot, so there must be some reason for it. However the people who ask the question never bother to explain why they need it so I am still baffled.
Anyway pretty much all of the XML editing tools on the market have that as a feature, I believe. I suppose they must be getting the same demand from their customers. Check them out. Google keywords: xml editor.