A concentration is a program of study within a degree program that emphasizes a specific area of the discipline. Concentrations usually have a defined course of study and are not listed on the diploma. Graduate concentrations appear on the transcript, but undergraduate concentrations usually do not (with a couple of preexisting exceptions). Establishment of concentrations does not require approval outside of the college. UC's Office of the President does not assign major codes to concentrations. In Berkeley's Student Information System, concentrations are defined as academic subplans.