olivier158 maybe this not important, but I hope to bay somthing good, one of days.
and when you bay somthing, you need to know about all in the product, I think. ;)
more than, I stumbled whith leans not alot. and nobady can't tell me what this all  mean. so I plain interesting what this all.... in interenet I don't fined, so I ask.... 
Thanks :)

AlexSM.