manual

This word carries a strong association with tactile control and human effort. When used as an adjective, it often implies a lack of automation, which can be perceived as either tedious or, conversely, as providing a higher degree of precision and mastery over a machine. As a noun, it evokes the image of a technical guide. While modern technology has shifted toward digital help files, the term still suggests a comprehensive, structured source of truth for troubleshooting and operational procedures.