| h1 | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| h2 | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| h3 | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| h4 | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| h5 | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| h6 | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| header | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| height | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hidden | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| HotLink | |
| 1 (Type/Class) | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| 2 (Data Constructor) | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hotlink | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hotLinkAttributes | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hotLinkContents | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hotLinkURL | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hr | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| href | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hreflang | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| hspace | Text.XHtml.Transitional, Text.XHtml |
| HTML | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| Html | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| HtmlAttr | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| htmlAttr | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |
| HtmlLeaf | Text.XHtml.Debug, Text.XHtml |
| HtmlNode | Text.XHtml.Debug, Text.XHtml |
| HTMLTABLE | Text.XHtml.Table, Text.XHtml |
| HtmlTable | Text.XHtml.Table, Text.XHtml |
| HtmlTree | Text.XHtml.Debug, Text.XHtml |
| httpequiv | Text.XHtml.Strict, Text.XHtml.Frameset, Text.XHtml.Transitional, Text.XHtml |