Hi, Last week I was asked an interesting question. A long-time ifeffit user was showing A&A to some grad students new to the XAS biz: [An] issue that came up with them as they began to use the software was: Dealing with background substraction from compounds with enormous white lines (Re data). I thought it would be useful to hear comments from people on the mailing list. Any takers? B -- Bruce Ravel ----------------------------------- ravel@phys.washington.edu Code 6134, Building 3, Room 405 Naval Research Laboratory phone: (1) 202 767 2268 Washington DC 20375, USA fax: (1) 202 767 4642 NRL Synchrotron Radiation Consortium (NRL-SRC) Beamlines X11a, X11b, X23b National Synchrotron Light Source Brookhaven National Laboratory, Upton, NY 11973 My homepage: http://feff.phys.washington.edu/~ravel EXAFS software: http://feff.phys.washington.edu/~ravel/software/exafs/