CVS (Concurrent Versions System) is a tool that enables you to track changes to a set of files over time. CVS is commonly used in software development to allow multiple developers to coordinate changes, track versions, and permit simultaneous development of different versions of the same code. This book is not just for software developers. It is for anyone who produces things that change. CVS can manage versions of anything that can be stored in files, so it is useful for programmers, system administrators, software architects, writers, graphic artists, and user-interface (UI) specialists. Outside the computing field, it can be used by authors, poets, managers, architects, engineers, accountants, and people running their everyday lives.