Index - X
| xhtml_1_0_strict | Text.HTML.Light.Constant, Text.HTML.Light |
| xhtml_1_0_transitional | Text.HTML.Light.Constant, Text.HTML.Light |
| xmlns | Text.HTML.Light.Attribute, Text.HTML.Light |
| xml_1_0 | Text.HTML.Light.Constant, Text.HTML.Light |
| xml_lang | Text.HTML.Light.Attribute, Text.HTML.Light |