Hi, I just joined the mailing list recommended by a friend, I hear this is a really good place to communicate and learn. So I'm here, actually I need help for some basic questions on Iffeffit software: 1, In Athena, how to make a fourier transform draft? 2, In Artemis, since I was told that each shell in R-space can be fitted separatly, is it OK to fit each shell in the R-range respectively, and then join up the fitted curve and just ignore the not match part in other R-ranges? And can a shell be comprised of several different paths (like Fe-O and Fe-S)? Thank you. Best wishes, Bingjie -- Bingjie Ouyang School of Earth Sciences and Engineering Nanjing University 22nd Hankou Road, Nanjing, Jiangsu, 210093 P. R. China Email: jessicaoy89@gmail.com