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Re: Towards XML 2.0

  • From: David Carlisle <davidc@nag.co.uk>
  • To: xml-dev@lists.xml.org
  • Date: Mon, 06 Dec 2010 11:50:57 +0000

Re:  Towards XML 2.0
On 06/12/2010 11:37, Michael Kay wrote:
>  >I don't know of any language where comments have to be syntactically
> correct, it's essentially equivalent to saying that there are no comments.
>
> In XSD, xs:annotation has to be well-formed.

True, so you often see schema with xml <!-- comments instead (or as well)

random example

http://www.w3.org/TR/2002/WD-SVG11-20020108/SVG.xsd

which has both comments and annotations.

structured annotation like xs:annotation or mathml's annotation-xml 
seems to be fundamentally different thing from comments.


annotation is adding structured content to the document
commenting is removing a span of text from the document as seen by the 
parser.

There are of course overlapping use cases and grey areas, but....

David


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