Say a program, myprog, has a master PHIL definition like: minimization.input .multiple = True { file_name = None .type = str nval = None .type = int } and a PHIL input file like: minimization.input { file_name = experiment1.dat nval = 42 } minimization.input { file_name = experiment2.dat nval = 13 } so that the user on the command line can type "myprog phil_input.txt" What would be the equivalent command line syntax of the PHIL input above? Rob -- Robert Oeffner, Ph.D. Research Associate, The Read Group Department of Haematology, Cambridge Institute for Medical Research University of Cambridge Cambridge Biomedical Campus Wellcome Trust/MRC Building Hills Road Cambridge CB2 0XY www.cimr.cam.ac.uk/investigators/read/index.html tel: +44(0)1223 763234 mobile: +44(0)7712 887162