Html elements abbr, sub, and command

abbr element Specifies that a string is an abbreviation for a longer word or phrase, sub element Specifies that the enclosed text should be rendered in the browser as subscript, command element The command element represents a command which the user can invoke. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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abbr abbr and sub, abbr, sub, and command

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