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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 ...
HTML markup consists of several key components, including those called tags (and their attributes), character-based data types, character references and entity references. HTML tags most commonly come in pairs like < h1 > and </ h1 >, although some represent empty elements and so are unpaired, for example < img >.
Some people refer to elements as tags (e.g., "the P tag"). Remember that the element is one thing, and the tag (be it start or end tag) is another. For instance, the HEAD element is always present, even though both start and end HEAD tags may be missing in the markup. [1] Similarly the W3C Recommendation HTML 5.1 2nd Edition explicitly says:
The Dublin Core vocabulary, also known as the Dublin Core Metadata Terms (DCMT), is a general purpose metadata vocabulary for describing resources of any type. It was first developed for describing web content in the early days of the World Wide Web. The Dublin Core Metadata Initiative (DCMI) is responsible for maintaining the Dublin Core ...
Microdata is a WHATWG HTML specification used to nest metadata within existing content on web pages. [1] Search engines, web crawlers, and browsers can extract and process Microdata from a web page and use it to provide a richer browsing experience for users.
Dynamic HTML, or DHTML, is a term which was used by some browser vendors to describe the combination of HTML, style sheets and client-side scripts (JavaScript, VBScript, or any other supported scripts) that enabled the creation of interactive and animated documents.
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Data cell | It adds a data cell, whose content can optionally be placed on a new line (see also the attribute separator) Data cell (on the same line) || It adds a data cell on the same line Attribute separator | It separates HTML attributes from cell or caption content Table end |} It closes a table (and is required)