3.2 Hypertext Markup Language (XHTML)

HTML is the foundation for publishing on the web.

Structure	<html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>...</title> </head> <body> ... </body> </html>

Text	h1, h2, h3, h4, h5, h6, p, blockquote, pre, q, br, strong, em, abbr, acronym, address, cite, code, dfn, kbd, samp, var, span, div

Hypertext	a

List	ol, ul, li dl, dt, dd

Forms	form, input, label, select, option, textarea

Tables	table, tr, td, th, caption

Image	img

Object	object, param

Meta information	meta

Link	link

Base	base

HTML, Tim Berners-Lee, CERN, Sept 1990
HTML 1.0, Internet Engineering Task Force (IETF) Draft, June 1993
HTML 2.0, IETF proposed standard, Nov 1995 (1994 status)
HTML 3.0, IETF draft proposal, Dec 1995
HTML 3.2, W3C recommendation, Jan 1997 (1996 status)
HTML 4.0, Dec 1997; HTML 4.01, Dec 1999
XHTML 1.0, Jan 2000; XML variant of HTML 4
- Simplified processing by a larger set of utilities
XHTML 1.1, May 2001; modular view of XHTML 1.0 (guidelines)
- Headings, paragraphs, lists, ...
- Enables XHTML submitting and extending for documents employing other tag sets
XHTML 2.0, Draft, May 2003
- Self describing specification of XHTML, for browsers not familiar with its semantics
- Conforming with related XML standards (e.g., linking, schema)
- New modules (e.g., ruby annotation)
XHTML Basic, Dec 2000; for agents with limited resources