audio element The audio element is used to embed sound content in an HTML or XHTML document, base element Specifies a base URL for all of the relative URLs in the document to use, aside element Defines content aside from the page content. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.
Click the html element name in the punctuation list to advance the example in 'Tryit-Editor':