Html elements command, link, and hgroup

command element The command element represents a command which the user can invoke, link element Defines the relationship between the current document and another document, hgroup element The HTML Headings Group Element (<hgroup>) represents the heading of a section. These elements allows child elements from interactive, embedded, heading, sectioning, phrasing, and metadata content categories.

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command command and link, command, link, and hgroup

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