The Module Management System for OpenVMS (MMS) automates and simplifies the building of software systems. MMS serves the following functions: o You can specify exactly how a software system is to be built and rebuilt. o System rebuilds can be done quickly when parts of the system change. o Modules can be built and tested locally before building or testing the modules in the source directory or library. For more information about using MMS, managing windows, or using the mouse, double click on an item from the list of additional topics below. For information about using help, choose Help from the Help menu above.