A legal document that requires the addressee to produce in court a person in its custody and justify his or her imprisonment. Habeas corpus is a writ that states that a person cannot be kept in prison unless they have first been brought before a court of law.Federal habeas corpus is a procedure under which a federal court may review the legality of an individual's incarceration. A writ of habeas corpus is an order from a court to an official to produce an inmate. So, a writ of habeas corpus is a court order to bring a person who's been detained to court to determine whether or not their detention is valid. If you are looking to file a Texas 11.07 Writ of Habeas Corpus application, post-convcition lawyer Sarah Durham is here to help. The "Great Writ" of habeas corpus is a fundamental right in the Constitution that protects against unlawful and indefinite imprisonment. The U.S. Supreme Court interprets the Constitution, which means it defines constitutional rights and violations in the cases it decides. The "Great Writ" of habeas corpus is a fundamental right in the Constitution that protects against unlawful and indefinite imprisonment. A writ of habeas corpus is a legal tool that a person can use to enforce a superior right of possession to a child.