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   Re: SGML, XML and SML

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  • From: Paul Tchistopolskii <paul@qub.com>
  • To: xml-dev@ic.ac.uk
  • Date: Mon, 22 Nov 1999 14:50:18 -0800

> I think it would be very nice, from a processing point of view, to have
> an XML variant that didn't have CDATA sections or DTDs (although entity
> definitions are useful!).  

1. Why entities should live in the core, if one can use  
any macroprocessor to get  *more*  flexible functionality?

2. How often do we need entities outside the DTD's ?

> I suspect CDATA sections are hard to live
> without if you're writing XML documents about HTML or XML, though.

Let us have <CDATA> element ? I think up to 3-5 elements with 
'hardcoded' semantics will not cause a big problem.

I think it is not  a big problem in traditional languages 
to use reserved keywords to avoid function names like 
for() or if()  ;-)

However, this suggestion kills compatibility with XML.

It's why I think that SML vs XML is very similiar to 

At some point it would be easier to break the 
compatibility than to support legacy. As far as I 
understand, exactly that thing happened with 

However, because usualy that CDATA  is all 
about turning < >    into &lt; and &gt;  it may be OK  
to live without CDATA at all - we *already*  have 
similiar problems with XML ;-)

Rgds. Paul.

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