Html elements dfn, progress, and command

dfn element Specifies that the enclosed text defines a term, progress element The HTML progress (<progress>) element is used to view the completion progress of a task, 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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dfn dfn and progress, dfn, progress, and command

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