The+clause+compromise+not+can+consider+nor a+a+pact+of the+contract+preliminary+of+sale+nor+one+element+such+contract:+is, instead,+a+contracttt o+autonomous+ad+effects+procedural,+that+can+ma+should not+be+content+in++a+document+with+the+contract+preliminary.+between+i+two+contracts,+date+la+lor o+autonomous+function,+not+exists+a+ratio+of+accessory,+as,+moreover,+expressly+foreseen+by art.+808,+co.+2,+cod.+proc.+civ.,+in+base+which+L+L A+validity+(and,+therefore,+even+the+efficacy)+of the+clause+skuser+must+be+assessed+in+self -independent way+compared to the+contract+per+which+it++it refers.