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Version control
version control, also known as revision control or source control is the management of changes to documents, computer programs, large web sites, and other collections of information.
- Snippet from Wikipedia: Version control
Version control (also known as revision control, source control, and source code management) is the software engineering practice of controlling computer files and versions of files; primarily source code text files, but generally any type of file.
Version control is a component of software configuration management.
A version control system is a software tool that automates version control. Alternatively, version control is embedded as a feature of some systems such as word processors, spreadsheets, collaborative web docs, and content management systems, e.g., Wikipedia's page history.
Version control includes viewing old versions and enables reverting a file to a previous version.