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Initially code-named "Cougar", [17] HTML 4.0 adopted many browser-specific element types and attributes, but also sought to phase out Netscape's visual markup features by marking them as deprecated in favor of style sheets. HTML 4 is an SGML application conforming to ISO 8879 – SGML. [19] April 24, 1998
In HTML and XML, a numeric character reference refers to a character by its Universal Character Set / Unicode code point, and uses the format: &#xhhhh; or. &#nnnn; where the x must be lowercase in XML documents, hhhh is the code point in hexadecimal form, and nnnn is the code point in decimal form. The hhhh (or nnnn) may be any number of ...
An expansion of the 400 Bad Request response code, used when a client certificate is required but not provided. 497 HTTP Request Sent to HTTPS Port. An expansion of the 400 Bad Request response code, used when the client has made a HTTP request to a port listening for HTTPS requests. 499 Client Closed Request.
Web colors are colors used in displaying web pages on the World Wide Web; they can be described by way of three methods: a color may be specified as an RGB triplet, in hexadecimal format (a hex triplet) or according to its common English name in some cases. A color tool or other graphics software is often used to generate color values.
This is an accepted version of this page This is the latest accepted revision, reviewed on 24 September 2024. Application protocol for distributed, collaborative, hypermedia information systems HTTP International standard RFC 1945 HTTP/1.0 RFC 9110 HTTP Semantics RFC 9111 HTTP Caching RFC 9112 HTTP/1.1 RFC 9113 HTTP/2 RFC 7541 HTTP/2: HPACK Header Compression RFC 8164 HTTP/2: Opportunistic ...
There are two general ways to specify which character encoding is used in the document. First, the web server can include the character encoding or " charset " in the Hypertext Transfer Protocol (HTTP) Content-Type header, which would typically look like this: [1] Content-Type: text/html; charset=utf-8. This method gives the HTTP server a ...
This help page is a . The markup language called wikitext, also known as wiki markup or wikicode, consists of the syntax and keywords used by the MediaWiki software to format a page. (Note the lowercase spelling of these terms. [a]) To learn how to see this hypertext markup, and to save an edit, see Help:Editing.
An HTML element is a type of HTML (HyperText Markup Language) document component, one of several types of HTML nodes (there are also text nodes, comment nodes and others). [vague] The first used version of HTML was written by Tim Berners-Lee in 1993 and there have since been many versions of HTML.