Web Style Sheets for the Visually Impaired
Work is currently going on to extend web style sheets to include facilities for the visually impaired as part of the HTML work within the World Wide Web Consortium (W3C) based at the Massachusetts Institute of Technology in the USA and INRIA.
HTML was originally intended as a structural markup language (defining, for instance what the top-level heading is for a document, but not how it should be displayed), but later additions by, amongst others Netscape and Microsoft, added new markup to HTML that was only there to influence the presentation, for
