Following the recent discussion on Bibles, I did some exploring of my Study Bibles:

Various study Bibles are typed: Bible Notes, Bible Commentary, and (in one case) Bible. Other books are also classed as Bible Notes - see the Life and Epistles of St. Paul. There seems to be some confusion (at least to me) as to what is a Bible Note and what is a Bible Commentary, I would think most of these should be Bible Notes,