and the date on which the War Damage Commission will be in a position to determine whether the case is one in which a cost of works payment or a value payment will be made. If a cost of works payment is to be made, the tenant will want to exercise his right under the Act of 1939 to retain the lease; if a value payment is to be made, he will want to exercise his right to disclaim the lease, thus absolving himself from all further liability there under. A tenant who exercises his right to retain the lease is put under a statutory covenant to restore the building, but, until he does so, he does not have to pay his rent, If a cost of we ks payment is made, he will get the building restored at no cost to himself.