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Hypertext Markup Language

<hypertext, World-Wide Web, standard> (HTML) A hypertext document format used on the World-Wide Web. HTML is built on top of SGML. "Tags" are embedded in the text. A tag consists of a "<", a "directive" (case insensitive), zero or more parameters and a ">". Matched pairs of directives, like "<TITLE>" and "</TITLE>" are used to delimit text which is to appear in a special place or style.

Links to other documents are in the form

	 <A HREF="">foo</A>

where "A" and "/A" delimit an "anchor", "HREF" introduces a hypertext reference, which is most often a Uniform Resource Locator (URL) (the string in double quotes in the example above). The link will be represented in the browser by the text "foo" (typically shown underlined and in a different colour).

A certain place within an HTML document can be marked with a named anchor, e.g.:

	 <A NAME="baz">

The "fragment identifier", "baz", can be used in an HREF by appending "#baz" to the document name.

Other common tags include <P> for a new paragraph, <B>..</B> for bold text, <UL> for an unnumbered list, <PRE> for preformated text, <H1>, <H2> .. <H6> for headings.

HTML supports some standard SGML national characters and other non-ASCII characters through special escape sequences, e.g. "é" for a lower case 'e' with an acute accent. You can sometimes get away without the terminating semicolon but it's bad style.

The World-Wide Web Consortium (W3C) is the international standards body for HTML.

Latest version: XHTML 1.0, as of 2000-09-10.


Character escape sequences.

See also weblint.


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