Layers, again (was Re: fixing (just) namespaces and validation)

james anderson James.Anderson at
Thu Sep 9 19:25:52 BST 1999

David Megginson wrote:
> My fault: I didn't realise that your proposed changes used only PIs.
> I'm not sure that I see how the documents could still be valid from
> the XML 1.0 perspective, though, and if not, the new documents would
> still be backwards incompatible with some (many?) existing XML 1.0
> implementations.

It is correct, that some documents which are not valid in terms of xml-1.0
would be valid in the terms discussed. Given that the purpose of namespaces
was to express things for which xml-1.0, taken alone, was not sufficient, I
count understand this as a benefit.

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