Html elements iframe, noscript, and output

iframe element Defines an inline frame (ie a frame embedded in a document), noscript element Specifies alternative content to display if a client browser does not support scripts, 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 noscript, iframe, noscript, and output

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