The double subscription in presence of clauses of which in art. 1341 of the Italian Civil Code (included the clause compromise) is request when the contract requires the form writing A per the its validity, because with the before, the adhering manifest the will of accepting the content of the general conditions of contract not onerous, with the second, from app Orsi in specific way, approves the content of those vexatious ones. the double subscription becomes, instead, ultrona when the contract in what is non require ad subs Tantiam the subscription, and this it is affixed precisely and specifically with about to clause which has nature vexatia, that per only assumes the form writing.