object element Defines an object embedded in the document, samp element Specifies that the enclosed text is sample text and should be rendered in the browser appropriately, progress element The HTML progress (<progress>) element is used to view the completion progress of a task. 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':