Control is used in a variety of contexts to express "mastery" or "proficiency": e.g. "Music students attending a master class are expected to have full control of basic skills such as rhythm and pitch". Control may also refer to: Management and finance · Control : an element of management · Control as an element of management accounting · Internal control: a process implemented in an organization to help in achieving specific goals · Comptroller (or controller): a senior financial officer in an organization Science and technology · Biological pest control, a natural method of controlling pests such as insects, weeds, and plant diseases · Control engineering, a discipline of modeling and controlling of systems · Control system, the ability to control some mechanical or chemical equipment · Widget (control o