I have revised the web versions of the detector.ini files for Small and Large on the web. They now include the mask definitions and moved the LUM to just under the EM calorimeter. I also fixed a volume overlap problem in the Large file. Richard -- Richard Dubois SLD, Stanford Linear Accelerator Center [log in to unmask] http://www.slac.stanford.edu/~richard/ 650-926-3824 650-926-2923 (FAX)