Section 508 Web Standards
(i) Frames shall be titled with text that facilitates frame identification and navigation.
What does it mean?
Name each frame so people know what the purpose is and whether it contains navigation links or content.
How to evaluate
Each frame has a meaningful title that clearly describes the frame’s purpose as navigation or content. Frames are labeled in three different places to ensure accessibility (Title tag at the start of HTML, and inside the frame tag itself using Title and Name). There is a link to a no frames version of the web site if a user cannot access frames or the browser does not support frames.
For more information
Design Resources