AccVerify is not only a great resource for fixing problems with web pages that do not meet Section 508 standards, it also provides ready web links to explain the specifics of each requirement along with the reasoning behind them. As you navigate through the reports generated by AccVerify you will notice the headings of each area look like web links. They are links!
By clicking on any of the blue text headers you will open up a new web browser that will take you
to the web page explaining the requirements and reasoning for each rule point.
The links go to http://www.access-board.gov/sec508/guide/1194.22.htm