The "extendable" part is about accepting unknown tags. The namespaces expansion ... | Hacker News

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		marcosdumay 28 days ago \| parent \| context \| favorite \| on: XML is a cheap DSL The "extendable" part is about accepting unknown tags. The namespaces expansion is responsible for destroying this, not for creating it.

panzi 28 days ago [–]

I mean I guess one can look at it like that. One could also say that namespaces make it clear what extension it is and resolve name conflicts.

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