A constitutional convention is a convention where an organization's constitution can be created, revised, or amended. A general constitutional convention is called to create the first constitution of a political unit or to entirely replace an existing constitution. An unlimited constitutional convention is called to revise an existing constitution. A limited constitutional convention is restricted to revising only a limited area of the current constitution. However, such conventions may decide to go beyond their original authority. For example, the United States Constitutional Convention of 1787 was supposed to be limited to amending the Articles of Confederation. Instead, they wrote an entirely new constitution.