_:vb50818921 "Jon Gunderson" . _:vb50818923 . _:vb50818922 . _:vb50818921 . _:vb50818923 . . . _:vb50818920 . . "Techniques for User Agent Accessibility Guidelines 1.0" . "2002-12-17" . . _:vb50818922 "Eric Hansen" . _:vb50818922 . _:vb50818923 . . _:vb50818920 . _:vb50818921 . _:vb50818920 "Ian Jacobs" .