iframe element Defines an inline frame (ie a frame embedded in a document), cite element Specifies that the enclosed text is a citation from another source, 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':