Simple Revision Control The venerable RCS (Revision Control System) has survived into the era of distributed version control because it fills a niche: sometimes you only *want* to track changes in single files at a time - for example, if you have a directory full of documents with separate histories. SRC (Simple Revision Control) is RCS, reloaded. It remains determinedly file-oriented and doesn't even track the committer of a change (because that's always you), but incorporates the design and user-interface lessons of modern version-control systems. It features sequential revision numbers, lockless operation, embedded command help, and a command set that will seem familiar to users of Subversion, Mercurial, and Git. See INSTALL for the (very simple) installation instructions. Run 'make check' for the regression test. Eric S. Raymond November 2014