b element Displays the text of the element as boldface text, hgroup element The HTML Headings Group Element (<hgroup>) represents the heading of a section, embed element Defines an object, such as a multimedia file, embedded in an HTML 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':