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Re: [xml-dev] Text Markup Part II

I think there's another important piece here, which is defining an 
entire vocabulary; a little mini-language, so you could have the 
concepts of validity, and some meta-document (dtd, schema, what have 
you) for defining the tags within that vocabulary.  You can't do that if 
you just say, let tags appear wherever.  The root element (along 
w/DOCTYPE) seems to have acted as a label for that.  That method for 
identifying a vocabulary is definitely an historic artifact, but you'd 
have to have *some* mechanism for it that would be sort-of global to a 


On 01/20/2012 07:14 AM, Michael Hopwood wrote:
>>>> What I'm trying to get at is the fundamental rational between  what appears to be two extremes not necessarily compatible, and why we ended up with only the later.
> Actually, and for a very long time before it became "cool" ;) to talk about this, it's really only been the latter, except that the "markup" for the rest of the document is implicit. Adding a "root" tag for the whole document simply formalises and makes machine-readable (although you could have done this a variety of other ways, like filename extensions) what "documentalists" of all kinds have been doing for a very long time; (more or less formally) identifying integral units of documentation.
> A MARC21 serialisation has message headers to separate different catalogue records in the stream - those are short documents, generally, although they can potentially get very long. And every element, as well as the whole thing, is marked up.
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