The "Web Content Accessibility Guidelines 1.0" ( http://www.w3.org/TR/WAI-WEBCONTENT/) is a W3C Recommendation, published on May 5th, 1999. It explains "how to make Web content accessible to people with disabilities. The guidelines are intended for all Web content developers (page authors and site designers) and for developers of authoring tools. The primary goal of these guidelines is to promote accessibility. However, following them will also make Web content more available to all users, whatever user agent they are using (e.g., desktop browser, voice browser, mobile phone, automobile-based personal computer, etc.) or constraints they may be operating under (e.g., noisy surroundings, under- or over-illuminated rooms, in a hands-free environment, etc.)." 
The "Web Content Accessibility Guidelines" are the reference for all content authors to take all aspects of hypertext publishing into consideration. If you want to create web pages especially for mobile browsers then some guidelines are not relevant. The guidelines for browsers in mobile devices are explained in the Chapter "W3C Web Content Accessibility Guidelines in practice".
Copyright © 2001-2003 by Rainer Hillebrand and Thomas Wierlemann