23DPreservation of beneficial reservations and conditions

23D  Preservation of beneficial reservations and conditions   If:  (a) a previous exclusive possession act attributable to the Commonwealth contains a reservation or condition for the benefit of Aboriginal peoples or Torres Strait Islanders; or  (b) the doing of a previous exclusive possession act attributable to the Commonwealth would affect rights or interests (other than native title rights and interests) of Aboriginal peoples or Torres Strait Islanders (whether arising under legislation, at common law or in equity and whether or not rights of usage); nothing in section 23C affects that reservation or condition or those rights or interests. 23DA  Confirmation of validity of use of certain land held by Crown etc.   To avoid doubt, if the act is a previous exclusive possession act because of paragraph 23B(9C)(b) (which deals with grants to the Crown etc.), the use of the land or waters concerned as mentioned in that paragraph is valid.