The RAM Manager is the hub through which all of the RAM Structural System design modules are activated. Using the RAM Manager you will create or open your structural model and establish your global criteria (such as units). Some of the output generated by the other modules can also be printed from the RAM Manager. Whenever you open one of the design modules, the RAM model or database is locked until you close that module and return to the RAM Manager. Traffic signals in the center of the RAM Manager screen indicate the status of the current model.