Hello All, I have a question about Artemis' interaction with FEFF. I know you can either run FEFF6L in Artemis to populate a paths list or externally create the FEFFnnnn.dat files in FEFF and import them into Artemis. We currently do the later using FEFF9, the use of the SCF card gives a better Eo initial guess and our compound has fractional occupancy/disorder that requires us to do some altering of the atoms list after its populated in ATOMS, which we find best to do outside of Artemis. My question is once these external FEFF9 paths are brought in does Artemis use FEFF6L in the fit process or is FEFF in Artemis only to populate the paths list? If Artemis doesn't use FEFF in the fit process then there's no issue but while I've read the mailing list and seen that many do not believe there is any improvement in the EXAFS results from FEFF6L to FEFF9, I'd rather be consistent in which version of FEFF we use throughout the analysis. I would have Artemis calling to FEFF9 instead of FEFF6L if in fact Artemis does use FEFF in the fit. The reason I haven't gone ahead with having Artemis call to FEFF9 making this a non issue is I'm not sure how. I know you can direct Artemis to whatever version of FEFF you want under preferences, but then I'm not sure what file I need to direct to specifically for FEFF9. So to summarize, Does Artemis use FEFF in the fitting process or is its only function in Artemis to create the paths for the fit? If it does use FEFF in the fitting, how do you/is it possible to have Artemis call to FEFF9 instead of FEFF6L? Thanks all for your time, Nate Turner