The <!DOCTYPE> element defines the document type definition for the element.
- Netscape 2, 3, 4, 6, 7
- Mozilla 1
- Firefox 1
- Internet Explorer 2, 3, 4, 5, 6
- Opera 3, 4, 5, 6, 7, 8
- Safari 1
- WebTV/MSN TV
- AvantGo Palm OS
- AvantGo Windows CE
- HTML 3.2, 4.0
None.
None. <!DOCTYPE> is a singleton tag.
None.
The <!DOCTYPE>; tag can only be found at the beginning of HTML
documents, before the <html> tag. The <!DOCTYPE> tag is valid within the
following tags:
None
- XHTML 1.0 DTD
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
- HTML 4.0 Transitional DTD
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
- This tag is required if your pages are to be XHTML compliant.

