Using XML can also have a direct effect on accessibility. Converting and maintaining thousands of HTML pages to be in compliance with Section 508 regulations (http://www.section508.gov/) that “require Federal agencies to make their electronic and information technology accessible to people with disabilities,” can be an imposing task. However, a typical XML-based Web site, in which thousands of HTML pages are automatically and consistently produced by a few dozen XSL files, can make this task highly manageable. Changing one XSL file can immediately bring hundreds of HTML pages produced by that XSL file into compliance. Also, multiple formats (HTML, PDF, printer friendly, etc.) that increase accessibility options are more easily created and maintained in an XML-based environment.