Numbers and their meaning with Builds

Ok, so, I have searched Google, GWguru hi and low to find out what the definite response of my question is and I have not been lucky at all. My question is, I notice some builds on PVX wiki have like fire 12 + 1 + 2 or critical strikes 10 + 3 + 1. My question is, what do the three numbers mean? I think I know the first number is how many points you pump into that attribute with stat points but what do the 2nd and 3rd numbers mean. Any help is definitely appreciated, thanks.

The first + number is your helmet attribute and the second number is the number from the applied runes.

The first number is the attribute, then there's a +increase to that attribute from a Rune and one of your attributes can be additionally enhanced by a +1 from Headgear bonus.
So for example:
12 + 3 + 1 Fire Magic
means that you put maximum attribute points to get the attrubute to 12,
and you wear a Superior Fire Magic Rune for a +3 bonus
and you wear a +1 Fire Magic Headgear
Effectively you will have 16 Fire Magic.

Thanks you two, that helps.