http://www.legislation.gov.uk/apgb/Geo3/10/51/section/8Entail Improvement Act 1770 An Act to encourage the improvement of lands, tenements, and hereditaments, in . . . Scotland, held under settlements of strict entail.1972-12-31texttext/xmlenStatute Law Database2011-05-261991-02-01 Taillie containing ample powers, heir in possession may exercise the same.8And if any taillie shall, either expressly or by implication, contain powers of leasing more ample than are hereby given; the heirs of entail in possession shall be at liberty to exercise all such powers, in the same manner as if this Act had never been made.