• From: David Carlisle <davidc@n...>
• To: davep@d...
• Date: Thu, 1 Mar 2007 09:58:26 GMT

> 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

• Follow-Ups:
  • Re: Validation - a history.
    • From: "Bob DuCharme" <bob@s...>

• References:
  • Validation - a history.
    • From: Dave Pawson <davep@d...>