In Mexican history, a plan was a declaration of principles announced in conjunction with a rebellion, usually armed, against the central government of the country (or, in the case of a regional rebellion, against the state government). Mexican plans were often more formal than the pronunciamientos that were their equivalent elsewhere in Spanish America and Spain. Some were as detailed as the United States Declaration of Independence. Some plans simply announced that the current government was null and void and that the signer of the plan was the new president.