The state writ of habeas corpus is a legal mechanism that allows individuals to challenge their detention or imprisonment. 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 powerful legal tool that allows individuals to challenge a criminal conviction or sentence. Habeas Corpus, in the Federal Court, is a petition that claims that you are being detained against your US constitutional rights. A Writ of Habeas Corpus is a civil proceeding that is available in both State and Federal Court to challenge the legality of imprisonment. The required application for a person currently incarcerated in TDCJ to file for a writ of habeas corpus under Texas Code of Criminal Procedure, Article 11.07. Latin for "that you have the body. A writ of habeas corpus is a legal tool that a person can use to enforce a superior right of possession to a child. Habeas Corpus (Trans: you have the body) -- A writ which brings a person before a court.