abbr element Specifies that a string is an abbreviation for a longer word or phrase, keygen element The HTML keygen element exists to facilitate generation of key material, and submission of the public key as part of an HTML form, hgroup element The HTML Headings Group Element (<hgroup>) represents the heading of a section. 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':