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The DELPHI Data Acquisition and Control System uses the Error and Message handling Utility (EMU) as a standard distributed system which deals with messages generated by the controlling and monitoring processes. A tool which allows one to look at EMU messages as they are produced and to retrieve past messages is described. This utility, being based on a configuration file, can be used both by the central and individual detector operators. Versions exist with both MOTIF (X-windows) and MHI (“VT100”) user interfaces.