Talk:Document type definition

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Extremely unreadable article, this sentence in the opening paragraph is too long and full of jargon w terms which are not wikified:
"A DTD is primarily used for the expression of a schema via a set of declarations that conform to a particular markup syntax and that describe a class, or type, of SGML or XML documents, in terms of constraints on the structure of those documents." Little Professor (talk) 18:41, 17 December 2007 (UTC)
thread_title: Extremely unreadable article

message: I'm surprised there was a mistake like this on the Wikipedia, which one would assume to be full of web geeks. I got rid of that little mistake on this article and there's now an article for the Document Type Declaration. It's only a stub but at least we're not parading around a lie anymore.--holizz 22:40, 21 Nov 2004 (UTC)
replies: text: References list also has this problem - e.g. it's linking to https://www.w3.org/TR/2004/REC-xml11-20040204/#NT-doctypedecl which is the doctype declaration 89.197.60.194 (talk) 13:45, 19 January 2016 (UTC)
thread_title:  A DOCTYPE is ''NOT'' a DTD 

message: I thought that, in XML, first there was DTD, and then along came XML Schema which was a more powerful way to specify what a valid XML document is.  What is the relationship between an XML DTD and an XML Schema?  I believe that I read that you should study XML DTDs first, but that they were superseded by the more powerful XML Schemas.
I must not understand because when I read the main article it seems to say that an XML DTD is an XML Schema.
Can someone clarify this for me?
Kaydell (talk) 13:35, 23 July 2008 (UTC)
replies: text: It did not say it was an XML Schema, i.e. a W3C XML Schema Definition Language, it said it was an XML schema (lower case s), i.e. a schema language for or in or of XML, and linked to that page. I am reverting that contrast back. Rick Jelliffe (talk) 11:16, 29 August 2009 (UTC)
thread_title:  In XML isn't a DTD the predecessor or an XML Schema? 

message: There's no mention of DTD --comments-- in this article though many of the examples use them. Is http://www.w3.org/TR/html401/intro/sgmltut.html#h-3.3.1 part of the formal DTD definition or is that something that's only in the HTML standard? --Marc Kupper|talk 01:50, 21 December 2010 (UTC)
thread_title:  Comments 

message: It may be merged into document type declaration. Sky6t (talk) 04:56, 7 February 2012 (UTC)
thread_title:  Suggestions 

message: I created a new section on security. It used to be possible to open XML files in MS Office, but Office 2010 refuses to open XML files with DTDs. I'm not an expert on this, so hopefully someone will expand this section, with an explanation of the error message "DTD prohibited". I suspect this is the main reason why Office users will find their way to this article. Margin1522 (talk) 09:23, 21 October 2013 (UTC)
thread_title:  New section on security 

message: I don't think the examples given in the Entity declarations section are accurate at all. They seem to me to be obviously incorrect and invalid XML. — RockMFR 04:16, 4 February 2014 (UTC)
replies: text: Specifics?  Also we're not interested in either "validity" or "XML" here, it's a question of well-formedness and SGML, both of which are subtly different. Andy Dingley (talk) 12:04, 4 February 2014 (UTC)
thread_title:  Entity declarations accuracy 

message: Readers of this page may be interested in thw following discussion:
* Wikipedia:Reference desk/Computing#DOCTYPE Puzzle
--Guy Macon (talk) 22:37, 1 June 2021 (UTC)
thread_title:  DOCTYPE Puzzle