Html elements iframe, meter, and output

iframe element Defines an inline frame (ie a frame embedded in a document), meter element The HTML meter element (<meter>) represents either a scalar value within a known range or a fractional value, output element The output (<output>) element represents the result of a calculation. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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iframe iframe and meter, iframe, meter, and output

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