12.1 - Title each frame to facilitate frame identification and navigation. Priority 1
12.2 - Describe the purpose of frames and how frames relate to each other if it is not obvious by frame titles alone. Priority 2
12.3 - Divide large blocks of information into more manageable groups where natural and appropriate. Priority 2
12.4 - Associate labels explicitly with their controls (in a FORM). Priority 2
Chuck Letourneau & Geoff Freed