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Meta elements can be used to specify page description, keywords and any other metadata not provided through the other head elements and attributes. [1] The meta element has two uses: either to emulate the use of an HTTP response header field, or to embed additional metadata within the HTML document. With HTML up to and including HTML 4.01 and ...
To this end, the Dublin Core Metadata Workshop met beginning in 1995 to develop a vocabulary that could be used to insert consistent metadata into Web documents. [9] Originally defined as 15 metadata elements, the Dublin Core Element Set allowed authors of web pages a vocabulary and method for creating simple metadata for their works. [10]
HTML tags most commonly come in pairs like < h1 > and </ h1 >, although some represent empty elements and so are unpaired, for example < img >. The first tag in such a pair is the start tag, and the second is the end tag (they are also called opening tags and closing tags).
The end of the header section is indicated by an empty field line, resulting in the transmission of two consecutive CR-LF pairs. In the past, long lines could be folded into multiple lines; continuation lines are indicated by the presence of a space (SP) or horizontal tab (HT) as the first character on the next line.
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Microformats (μF) [note 1] are predefined HTML markup (like HTML classes) created to serve as descriptive and consistent metadata about elements, designating them as representing a certain type of data (such as contact information, geographic coordinates, events, products, recipes, etc.). [1]
Yet he arguably has done more to shape the modern internet — and quicken its consolidation with and capture of American politics — than any non-CEO in the world.
Metadata tags as described in this article should not be confused with the use of the word "tag" in some software to refer to an automatically generated cross-reference; examples of the latter are tags tables in Emacs [15] and smart tags in Microsoft Office. [16]