This may have already been covered so sorry if this is a repeat.
I am not quite sure I understand traits. For instance I see that there are a specific rules for things like PIERCING. But what about others like charming, or ancient mind? I don't see rulings. Is this because, and I am assuming so, that they are descriptors and it's up to gm/fiction to describe what they mean and do. Someone please help.
Thanks in advance.
John