Html elements abbr, object, and iframe

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

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abbr abbr and object, abbr, object, and iframe

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