There are many kinds manual in our life. Let introduce one of them, today. A user guide also commonly known as a manual, is a technical communication document intended to give assistance to people using a particular system. It is usually written by a technical writer, although user guides are written by programmers, product or project managers, or other technical staff, particularly in smaller companies. This kind manual is more commonly associated with electronic goods. Just like computer hardware and software. Most manual contain both a written guide and the associated images. In case of computer applications, it is usual to in clued screenshots of the human –machine interface, and hardware manuals often include clear, simplified diagrams. The language used is matched to the intended audience, with jargon kept to a minimum or explained thoroughly. This is all about this kind manual. Do you understand？