Christopher R. Maden wrote:
>
> There are valid XML documents written without xml:id.
>
> It would be good for non-DTD-reading systems to know about IDs in those
> documents.
The whole point of xml:id is for documents which are well-formed. All valid
XML documents are valid with respect to a DTD which can indicate IDs.
>
> Adding xml:id will invalidate those documents.
Right, but there is no need to add xml:id to documents which are associated
with a DTD, the entire reason for existence is those XML documents without a
DTD. So yes, you can shoot yourself in the head, but doing so is not
recommended :-)
Jonathan
