The most comprehensive handbook and best presented that I've seen to date. Boards, do you want in here! At least we can find happiness without having to create a ... One and a half flat, however: the half, not sure if the board from below does not interfere with the one on which we work. The whole flat: between negative electric green and electric black, it's true that it's not ACTUALLY great for humans. But to generalize by saying "Cancer", you still have to go carefully !!! hence my 4 stars and not 5. All "penduleur" there is something.