Recommended 

ii: 

Interactions do not depend upon the assumption that a user will hear an audible notification. 

Recommended 

ij: 

Where appropriate, users can choose to receive cues as audio or visual information. 

Recommended 

ik: 

The application does not overuse or rely exclusively on audible information. 

Recommended 

il: 

Users can choose to configure the frequency and volume of audible cues.