Section 140 Interpretation of sections 138 and 139.

an original or derivative under-lease;

an agreement for a lease where the lessee has become entitled to have his lease granted; and

a grant at a fee farm rent, or under a grant securing a rent by condition;

an original or derivative under-lessee;

the persons deriving title under a lessee;

a grantee under a grant at a fee farm rent, or under a grant securing a rent by condition; and

the persons deriving title under such a grantee;

an original or derivative under-lessor;

the persons deriving title under a lessor;

a person making a grant at a fee farm rent, or a grant securing a rent by condition; and

the persons deriving title under such a grantor;