Html elements iframe, abbr, and embed

iframe element Defines an inline frame (ie a frame embedded in a document), abbr element Specifies that a string is an abbreviation for a longer word or phrase, embed element Defines an object, such as a multimedia file, embedded in an HTML document. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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iframe iframe and abbr, iframe, abbr, and embed

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