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   Re: Document Feature Requirements [was: Common XML ...]

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  • From: "Simon St.Laurent" <simonstl@simonstl.com>
  • To: Steve Rowe <sarowe@textwise.com>
  • Date: Sun, 09 Apr 2000 01:12:28 -0400

At 08:16 PM 4/8/00 -0400, Steve Rowe wrote:
>Please forgive my ignorance; Common XML *Core* excludes PIs.  

Common XML *Core* doesn't include PIs - it doesn't _exclude_ anything from
XML 1.0, however.  Not including something in the core isn't the same as
excluding it.  

Including a PI in a document isn't violating conformance to the core, it's
just taking a risk that the PI will be ignored, discarded, or misunderstood.

Common XML *Core* is only a list of the most interoperable parts of XML.
It isn't a specification in the sense of "to create a document conforming
to Common XML Core, do X, Y, and Z, and not A, B, C."

There is no expectation that anyone will ever create Common XML parsers.
The Core is just the safest parts.

>It appears
>that you've intentionally left the boundary between XML and Common XML
>fuzzy, if not altogether invisible.  Of course Common XML doesn't exclude
>anything in XML.  It *is* XML.

Exactly.  There is no boundary whatsoever.  Common XML is only a
redescription of XML 1.0 from a perspective that values interoperability at
a document information level above everything else.

It might well be interesting for other folks to create their own
redescriptions from different explicit perspectives.  I'd love to see it,
though it isn't the goal of this project.

It's also worth noting that folks seeking a retake of XML that _does_
exclude other possibilities should probably explore Minimal XML, the other
end of work from SML-DEV.

>If CXML is intended to partition XML features, the naming scheme needs

Perhaps.  Core and extensions doesn't seem too far-fetched to me, but we'll
talk it over again.

Simon St.Laurent
XML Elements of Style / XML: A Primer, 2nd Ed.
Building XML Applications
Inside XML DTDs: Scientific and Technical
Cookies / Sharing Bandwidth

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