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Re: [xml-dev] Validation - a history.

From: David Carlisle <davidc@---.--.-->
To: davep@-------.--.--
Date: 3/1/2007 9:59:00 AM
> Did DTD's grow up with SGML or were they added?

They predated the S being added to SGML.

http://www.sgmlsource.com/history/roots.htm


  The DCF GML User's Guide (IBM SH20-9160), which I wrote in 1978,
  includes the first published formal document type "descriptions"
  (DTDs),   

  .....



and of course the notion of a formal grammar against which a language
could be parsed is a lot older than that.


David


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