details element The HTML details element (<details>) is used as a disclosure widget from which the user the retrieve additional information, command element The command element represents a command which the user can invoke, 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':