A manual component is a physical part of a machine or system that requires manual operation or adjustment. It is usually operated by a person, as opposed to an automated component which is operated by a computer or other automated system. Manual components are often used in industrial settings, such as factories, and can be found in many everyday items, such as cars, appliances, and electronics. The term 'STEP' in this context refers to the process of manually operating or adjusting the component.