Mewn cyd-destun cyfreithiol. Diffiniad: "A reservation in international law <http://en.wikipedia.org/wiki/International_law> is a caveat <http://en.wikipedia.org/wiki/Caveat> to a state's acceptance of a treaty. By the 1969 Vienna Convention on the Law of Treaties <http://en.wikipedia.org/wiki/Vienna_Convention_on_the_Law_of_Treaties> (VCLT), a reservation is defined as a "unilateral statement, however phrased or named, made by a State <http://en.wikipedia.org/wiki/State> , when signing, ratifying <http://en.wikipedia.org/wiki/Ratification> , accepting, approving or acceding to a treaty <http://en.wikipedia.org/wiki/Treaty> , whereby it purports to exclude or to modify the legal effect of certain provisions of the treaty in their application to that State."" Neilltuad? Eithriad? Diolch am unrhyw gymorth. Claire