Solve : document type declaration?

1.	Solve : document type declaration?
Answer» Need an explanation of "document type declaration". I have had about 70-80 html pages on the internet in 3 different websites, all without a document type declaration. I don't" 1)understand the function/purpose of such a declaration and 2)don't know how to DETERMINE which of the following ones APPLY to me: --- for HTML 4.01 Strict documents, http://www.w3.org/TR/html4/strict.dtd"> should be the first line. --- For HTML 4.01 Transitional documents, the first line should be http://www.w3.org/TR/html4/loose.dtd">. --- For HTML 4.01 Frameset documents, the first line should be http://www.w3.org/TR/html4/frameset.dtd">. Thanks I Is this homework? The topic "document type declaration" with reference to HTML has to do with the evolution of HTML over the past few YEARS. HTML is supposed to be a standard now. Or soon will be. Real soon. Maybe. Quote HTML 4.01 Strict does not allow presentational markup with the ARGUMENT that Cascading Style Sheets should be used for that instead http://en.wikipedia.org/wiki/Document_Type_Declaration Now, having PUT that link, here is what I find in a page I just made: Quote <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> Quote HTML is supposed to be a standard now. Or soon will be. Real soon. Maybe. HTML 4 and XHTML 1.1 is now the standard. http://www.w3schools.com/xhtml/xhtml_dtd.asp

Answer»

Need an explanation of "document type declaration". I have had about 70-80 html pages on the internet in 3 different websites, all without a document type declaration. I don't"
1)understand the function/purpose of such a declaration and
2)don't know how to DETERMINE which of the following ones APPLY to me:
--- for HTML 4.01 Strict documents, http://www.w3.org/TR/html4/strict.dtd"> should be the first line.

--- For HTML 4.01 Transitional documents, the first line should be http://www.w3.org/TR/html4/loose.dtd">.

--- For HTML 4.01 Frameset documents, the first line should be http://www.w3.org/TR/html4/frameset.dtd">. Thanks

I Is this homework?
The topic "document type declaration" with reference to HTML has to do with the evolution of HTML over the past few YEARS. HTML is supposed to be a standard now. Or soon will be. Real soon. Maybe.

Quote

HTML 4.01 Strict does not allow presentational markup with the ARGUMENT that Cascading Style Sheets should be used for that instead

http://en.wikipedia.org/wiki/Document_Type_Declaration

Now, having PUT that link,
here is what I find in a page I just made:
Quote

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

Quote

HTML is supposed to be a standard now. Or soon will be. Real soon. Maybe.

HTML 4 and XHTML 1.1 is now the standard.

http://www.w3schools.com/xhtml/xhtml_dtd.asp

Solve : document type declaration?

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