1. Controlled or manipulated by a human operator (not automatically, such as by a computer) or powered by human or animal muscle power (not by an inanimate source of power such as an electric motor, gas engine, or sail).
2. Comprehensive and step-by-step guide to a particular topic for both beginners and practitioners that also serves as a reference book. A manual details what is given and what is required, explains how to put the presented information into practice, and instructs how to solve problems as they occur. This term is commonly used interchangeably with handbook.