- xhtml-1.0-strict constant
- html-4.01-strict constant
- xhtml-1.0-transitional constant
- html-4.01-transitional constant
- xhtml-1.0-frameset constant
- html-4.01-frameset constant
- html-3.2 constant
- html-2.0 constant
Aliases for doctype-*. Deprecated as of doctype version 2.0.