HyperText Markup Language (HTML) is a markup language designed for creating web pages, that is, information presented on the World Wide Web. Defined as a simple "application" of SGML, which is used by organizations with complex publishing requirements, HTML is now an Internet standard maintained by the World Wide Web Consortium (W3C). The most recent version is HTML 4.01.
HTML generally appears in text files stored on computers connected to the World Wide Web. These files contain information in plain text mixed with markup, that is, instructions for the program on how to display or process the text. Usually HTML is displayed by a web browser, but many email clients also allow sending and reading HTML e-mails.
There are four kinds of markup elements in HTML:
- structural markup that describes the purpose of text (for example,
<h1>Golf</h1>will cause a reader to treat "Golf" as a first-level heading),
- presentational markup that describes the visual appearance of text regardless of its function (for example,
<b>boldface</b>will render boldface text),
- hypertext markup that links parts of the document to other documents (for example,
<a href="http://www.wikipedia.org/">Wikipedia</a>will render the word Wikipedia as a hyperlink to the specified URI), and
- widget elements that create objects (for example, buttons and lists).
Version history of the standard:
- HTML 2.0 (RFC 1866) approved as a proposed standard -- September 22, 1995,
- HTML 3.2 -- 1996,
- HTML 4.0 -- December 18, 1997,
- HTML 4.01 (minor fixes) -- December 24, 1999,
- ISO/IEC 15445:2000 ("ISO HTML") -- May 15, 2000.
|Table of contents|
2 See also
3 External Links
With the release of HTML 4.0, many elements and attributes relating to presentation (the
bgcolor attribute and
font element, for example) were deprecated in favor of CSS, and entirely removed from the strict "Document Type Definition".