Html elements acommand, and sub

a element Specifies either a hyperlink or a target for a hyperlink, command element The command element represents a command which the user can invoke, sub element Specifies that the enclosed text should be rendered in the browser as subscript. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

Restore previous example

a a and command, acommand, and sub

Advanced example

Click the html element name in the punctuation list to advance the example in 'Tryit-Editor':

You cannot advance example level further.