chickadee » doctype » doctype-html-2.0

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">