So Persona 3 FES arrived in the mail yesterday and I'm loving it so far. However, I don't understand something about the fusing. Next to the names of the Personae (I guess that's the plural form?) there are numbers with dots that represent "Valid". Blank spots represent "Unvalid". What does this mean? Here's what I'm talking about: 
 

The same as in Persona 4?

It just means which personas you can fuse those personas with. So for example Orpheus is on the top of the list, number 1 and it has dots on the numbers 2, 3, 4, 5 but not 6. This means I can fuse with any of those personas but it can't fuse with persona 1 because persona 1 is Orpheus itself and personas obviously can't fuse with themselves. As for persona 6, I can't fuse with that one because there won't be a new persona from fusing those two together.

" It just means which personas you can fuse those personas with. So for example Orpheus is on the top of the list, number 1 and it has dots on the numbers 2, 3, 4, 5 but not 6. This means I can fuse with any of those personas but it can't fuse with persona 1 because persona 1 is Orpheus itself and personas obviously can't fuse with themselves. As for persona 6, I can't fuse with that one because there won't be a persona from fusing those two together. "