Dear All, Recently, i found out that feff.inp generated by web atoms and Demeter 0.9.26 are not the same. My main worry is in the position of atoms. For evidence, i am attaching YbVO4 (*feff.inp*) files generated by both web atoms and Demeter. With this kind of zircon type structure, one would except V1_2 at position *x/2+c/4* (3.85250). In web atoms generated file, i could see this relation clearly, while in Demeter generated file the relation reads like *x/2+y/2+c/4* instead of earlier condition. Furthermore, all atoms (except few) are represented with three coordinated position for Demeter generated file instead of two coordinated position. I already posted this query in the ifeffit mailing domain but the message was not get circulated. Hence, I writing this problem to you. With regards, Raj