Grok organized these tags for clarity, noting their primary purpose and status (e.g., if deprecated in HTML5, as many legacy tags are no longer recommended in favor of CSS or semantic alternatives). Summaries are based on standard HTML5 usage where applicable. - ``: Defines a comment in the HTML code, which is not rendered by the browser but useful for notes or debugging. - ``: Declares the document type and version (e.g., HTML5), helping browsers render the page correctly; it's required at the start of HTML documents. - ``: Creates a hyperlink to another page, file, or location within the same page; supports attributes like `href` for the URL. - ``: Represents an abbreviation or acronym, often with a `title` attribute to provide the full expansion on hover. - ``: Deprecated; formerly used for acronyms, now replaced by ``. - ``: Defines contact information for the author or owner of a document or article, typically rendered in italics. - `