If a frame cannot be adequately described in its title, include the "longdesc" attribute within the frame element to provide a link to additional information. The "longdesc" attribute can also be useful in helping to explain relationships between frames.
<html lang="en"> <head><title>Frame elements missing valid long descriptions</title></head> <frameset rows="100,200"> <frame src="TableData.htm"> <frame src="TableLayout.htm" title="this frame title" longdesc="tl.htm"> <frame src="TableLayout2.htm" title="this frame title" longdesc="tl2.htm"> </frameset> </html>
W3C WAI: http://www.w3.org/WAI//
HTML Techniques for WAI 1.0: http://www.w3.org/TR/WCAG10-HTML-TECHS/