^Includes basic presentational content and SVG and MathML markup, officially supported in version 1.3. In select XML editors and management systems, the images and content can be viewed as rendered, through CSS mostly.
^Presentational content is supported through SVG and MathML markup. In select XML editors, the images can be viewed as rendered.
^Presentational markup is deprecated as of XHTML 1.0 and no longer allowed as of XHTML 1.1
^Presentational markup is deprecated as of HTML 4.0
^MathML comes in two mark-up syntaxes: a semantic and a presentational.