Collaborative DRE (CDRE) was created to allow DRE to be utilized in a real-world distributed environment. It functions as part of a client/server architecture, where individual workstations contain only the code necessary to view and operate the DRE metrics calculator, and centralized data and application servers provide the bulk of the DRE operation software. Instructions for the Collaborative DRE provides a good introduction to the basics of CDRE.
The DRE Server's instruction manual is relatively empty; other than the initial activation and eventual termination, it is autonomous and requires no user input. There is no Graphical User Interface to display application information, and no input from the command console is ever needed. However, the Configuration Document contains detailed information about the configuration needs and possibilities of the DRE Server.