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[XML-DEV Mailing List Archive Home] [By Thread] [By Date] [Recent Entries] [Reply To This Message] Re: The purpose of a namespace URI is ...
Liam R E Quin scripsit:
> But I'm not convinced: public identifiers need indirection, and if you
> have indirection you can ue indirection for the system identifiers too.
You were there and I was not, but what I understood was that public ids
were absolute names and system ids were meaningful to the current process.
So given a URI as a public id, you could dereference it if no system id
was present, or you could make use of the system id to find a specific
copy of it. So an XHTML DOCTYPE might look like any of these:
<!DOCTYPE html SYSTEM "../dtds/mini-html.dtd">
<!DOCTYPE html PUBLIC "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"
"../dtds/standard-html.dtd">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
"../dtds/standard-html.dtd">
> The contribution of public ids was their structure, and the idea of
> giving something a name, not the fact that they didn't actually work :-)
*Formal* public ids have a structure, but public ids didn't have to
be formal.
--
John Cowan cowan@ccil.org http://www.ccil.org/~cowan
Statistics don't help a great deal in making important decisions.
Most people have more than the average number of feet, but I'm not about
to start a company selling shoes in threes. --Ross Gardler
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