"Accessibility, the design of HTML documents for accessibility by people with disabilities, is such an important aspect of the Internet today that the Worldwide Web Consortium (W3C) has adopted a set of guidelines for designing accessible Web sites. The Web Content Accessibility Guidelines (WCAG) closely follow Section 508 of the U.S. Rehabilitation Act.
For some Web sites, adherence to the WCAG is not optional; it is a necessity. Expression Web/FrontPage 2003 has tools for evaluating the accessibility of an entire Web site, identifying elements that violate the guidelines, and finding ways to correct the violations. The accessibility checker provides all of this functionality in a single dialog box.
To access the accessibility checker on the Tools menu click Accessibility (Accessibility Reports). You can use the accessibility checker to check a single page or an entire Web site. The accessibility checker checks for varying levels of accessibility and specifically for adherence to Section 508 of the U.S. Rehabilitation Act. You can check for errors or warnings, and you can add a manual checklist."