- doctype-xhtml-1.0-strictconstant
- doctype-html-4.01-strictconstant
- doctype-xhtml-1.0-transitionalconstant
- doctype-html-4.01-transitionalconstant
- doctype-xhtml-1.0-framesetconstant
- doctype-html-4.01-framesetconstant
- doctype-html-3.2constant
- doctype-html-2.0constant
Strings corresponding to the "obsolete permitted" HTML and XHTML doctypes. In general it is safe to use doctype-html instead, as the doctype is typically only used to switch browsers into standards mode, and all known browsers do this with doctype-html.
;doctype-html-4.01-strict <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">