The document defines blackmail as making unwarranted demands with menaces with the view to gain for oneself or cause loss to another. An unwarranted demand is one made without belief in having good reason. The mens rea of blackmail is the intention to reinforce a demand by menacing behavior. The defendant must believe they have good reason for making the demand and that using menaces appropriately reinforces it. If a defendant can prove these beliefs, they are not guilty of blackmail. The document also lists some example cases related to blackmail.