Orders are like ordinances in that they are legally binding legislation, but differ in that they deal with internal matters, rather than the general public. Appointments, rules of procedure, personnel policies and official internal matters are all examples of what an order might include. There are two kinds of orders: municipal and executive.
Municipal orders are produced by the council or commission to establish any internal policy it sees fit as an independent body. In other words the mayor need not approve it for the order to be adopted. Executive orders are similar in that the mayor can produce an order without the approval of the council (only in the mayor-council form of government).
Orders are not as far-reaching as ordinances, but they are enforceable unlike resolutions. Since orders deal mostly with personnel issues, any discipline is handled internally, usually through penalties such as reprimands, suspensions or dismissal.