strong element Specifies that the enclosed text should be rendered in the browser as "strong" (usually bold) text, sup element Specifies that the enclosed text should be rendered in the browser as superscript, var element Specifies that the enclosed text is a variable. 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':