HTML 2.0 specifications define features that let users display inline images and use interactive forms HTML 3.0 includes support for rendering tables, inline figures, math equations and formulas, better character-positioning control, a banner area on pages for static displays of logos or disclaimer information, and the ability to dynamically customize a browser's menu or toolbars from within an HTML document. HTML 4.0 is W3C's recommendation for the latest version of HTML, following on from earlier work on HTML 3.2 and HTML 2.0 . To facilate a truly international Web, HTML includes features for rendering text written right to left, as, for example, in Arabic and Hebrew. The LANG attribute can be used with many tags to help the browser to display text in a way appropriate to the language in question. There are also features for specifying the character encoding and language of a document designated by a hypertext link.
Some users rely on speech synthesizers or Braille readers when browsing the Web.
HTML 4 includes features which makes the Web more accessible to those who are visually impaired or have other disabilities. Some elements do not affect a block of text are hence called empty elements, which do not require end tags. Element names and attributes are case insensitive. The placement of elements in a document must obey the HTML rules of nesting, which simply means that there are rules about where elements can and cannot appear. Elements are not tags.