The Section 508 hotfix introduces new properties to make the DataGrid control accessible. These properties are UseAccessibleHeader, Caption, and CaptionAlign. By default, the value of UseAccessibleHeader is false. When UseAccessibleHeader is set to true, it renders DataGrid table headers in <TH> tags with a scope="col" attribute.
Please note that installing the hotfix does not make your site compliant by itself. There's much more to it. For more information see:
This was first published in September 2003