A power of attorney is an instrument containing an authorization for one to act as the agent of the principal that terminates at some point in the future either by its terms or by operation of law such as death of the principal or agent. They are also called letters of attorney. The person appointed is usually called an Attorney-in-Fact. The person making the power of attorney appointment is called the principal. The power of attorney is frequently used to help in the event of a principal’s illness or disability, or in legal transactions where the principal cannot be present to sign necessary legal documents. A power of attorney can be either general, durable or limited. Some states have adopted a statutory power of attorney. Other specific types of power of attorneys include: Health Care Power of Attorney, Power of Attorney for Care and Custody of Children, Power of Attorney for Real Estate matters and Power of Attorney for the Sale of a Motor Vehicle.