- xhtml-1.0-strictconstant
- html-4.01-strictconstant
- xhtml-1.0-transitionalconstant
- html-4.01-transitionalconstant
- xhtml-1.0-framesetconstant
- html-4.01-framesetconstant
- html-3.2constant
- html-2.0constant
Aliases for doctype-*. Deprecated as of doctype version 2.0.