<Tr> <Td> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> <P> The MediaWiki software, which drives Wikipedia, allows the use of a subset of HTML5 elements, or tags and their attributes, for presentation formatting . But most HTML can be included by using equivalent wiki markup or templates; these are generally preferred within articles, as they are sometimes simpler for most editors and less intrusive in the editing window; but Wikipedia's Manual of Style recommends their use in certain cases . And HTML is useful outside of articles, for example for formatting within templates . For help with Cascading Style Sheet use within Wikipedia see Help: Cascading Style Sheets . </P> <P> Some tags look like HTML, but are actually MediaWiki parser and extension tags, and so are really wiki markup . HTML in pages can be checked for HTML5 compliance by using validation . </P>

In wikipedia it is possible to edit the text of an article in html.​