to relinquish (a right, claim, or contention) either by express declaration or by doing some intentional act which by law is equivalent to this; to decline to avail oneself of (an advantage); to refuse to accept (some provision made in one´s favour)
Requests for assistance and relevant documents shall be accompanied by a translation in the official language, or one of the official languages of the Member State in which the requested authority is situated, without prejudice to the latter authority's right to waive the translation.