Altova Mailing List Archives>Archive Index >xml-dev Archive Home >Recent entries >Thread Prev - Validation - a history. [Thread Next] Re: [xml-dev] Validation - a history.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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