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   Re: [xml-dev] A multi-step approach on defining object-orientednatureof

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At 14:02 21/8/02, Elliotte Rusty Harold wrote:
>I suspect an irrational aversion to processing instructions killed this 
>sensible scheme.

My recollection was exactly thus: even though compatibility with existing 
Web browsers was explicitly not a goal of XML, the fact that browsers 
displayed PIs made them a non-starter for namespaces in a mandate that came 
down from the W3C Team.  I seem to recall that this was just as RDF was 
getting started, and it was Very Important that it be possible to embed RDF 
in HTML pages without disrupting existing browsers, and also that RDF use 
namespaces.  (I think P3P uses RDF, and thus this requirement, but I can't 

>This would not have fixed the issues with unresolvable URLs or attributes 
>in no namespace, but it would have neatly eliminated all scoping issues.

The scoping issue was independent from PI usage, though; there were 
proposals to scope the PI syntax to the immediately containing 
element.  However, it was strongly argued that some processes might be 
building multi-namespace documents on the fly, and not know that they 
needed to declare a particular namespace until halfway through.

- -- 
Christopher R. Maden, Principal Consultant, crism consulting
DTDs/schemas - conversion - ebooks - publishing - Web - B2B - training
<URL: http://crism.maden.org/consulting/ >
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