header element The HTML Header Element (<header>) represents a group of introductory or navigational aids, object element Defines an object embedded in the document, audio element The audio element is used to embed sound content in an HTML or XHTML document. 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':