but it's been explained I think that the book of law had the secrets of angels on it. I mean Crowley write it with the help of Aiwass. It sure to holds those forbidden spells and knowledge. And it being related to angels. We can just assume that it's written in angelic ways.
If Accelerator gets his hands on it. He probably can start to decipher it. He did start to understand the angelic language.
So it's thelema and not telesma. But it looks the same or almost the same so I thought its the same.
EDIT:delete my rant grrr