This power will only be used where the Welsh Minister consider that the modifications are necessary or appropriate for or in connection with any of the following purposes:
Ni chaiff y pŵer hwn ei ddefnyddio ond pan fydd un o Weinidogion Cymru o'r farn bod yr addasiadau'n angenrheidiol neu'n briodol at unrhyw rai o'r dibenion canlynol neu mewn cysylltiad â hwy.