I probably shouldn't say "crap", it just sounded funny to be so emphatic. I think, personally, my confusion really comes from xml schema's use of it, in its ru

I probably shouldn't say "crap", it just sounded funny to be so emphatic. I think, personally, my confusion really comes from xml schema's use of it, in its rules about qualified vs. unqualified etc. http://www.w3.org/TR/xmlschema-0/#NS http://www.w3.org/TR/xmlschema-0/#NS It's one of those unintuitive sets of rules that I have to look up every time, and it's horrible to get on top of it again. I think there's probably a de facto standard subset of these rules, that usually used in practice. I bet most visual tools/IDEs make this choice already, so it's invisible to most people who actually work with XML.