Version 0.4 of the Aggregation Server Configuration XML format is available for your comments. Changes (partly due to Joe Sirott's comments) include renaming some attributes, the use of XML namespaces, and factoring out the aggregation definitions from the Catalog. Version 0.4 is being used in the latest Agg Server; we are not completely happy with it but it is working. We would appreciate any comments on it. http://www.unidata.ucar.edu/projects/THREDDS/tech/AggServerConfig.html The Aggregation Server itself has some sketchy documentation at: http://www.unidata.ucar.edu/projects/THREDDS/tech/DODSAggServer.html