Code Management System for OpenVMS (CMS) is a library system for software development and maintenance. CMS stores source files in a library, keeps track of changes made to the files, and records user access to the files. If you have installed DECwindows on your system, you can also use the CMS DECwindows interface (CMS Version 3.2 and higher). See the /INTERFACE qualifier for information on invoking the CMS DECwindows interface.