I have just been experimenting with the Commentary section of the default Passage Guide and it seems to include resources of type "Bible Notes" as well as those of type "Bible Commentary".
It includes - for example - the "ESV Study Bible" and the "NET Bible First Edition Notes" resources.
While this sounds like a good idea it wasn't what I was expecting.
This raises a wider question - is there a mapping somewhere showing which resource types are included in which PG sections?
Thanks for any insight
Graham