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The internal subset can override parameter entities
and attribute declarations in the DTD.
So if I want to answer a question such as "are these
two documents of the same type?" I'm not going
to get a very reliable answer from just the
DOCTYPE's public or system identifiers. I'd also
need to compare canonicalizations of the internal
subsets.
Bill
Bullard, Claude L (Len) wrote:
> Why?
>
> len
>
> -----Original Message-----
> From: Bill Lindsey [mailto:bill@b-bop.com]
>
> The internal subset of DTDs makes !DOCTYPE declarations too unreliable.
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