hi, this is a minor point really, but when I try to load a cns structure via format converter/import/single file/coordinates/cns, and the file also contains a non-standard amino acid, I have to manually link all the non-standard atoms in the coordinate file to the non-standard atoms in my molecular system, even though all except one have an exact match. format converter seems to sort of match them in that it gives me a subset of atoms to choose from eg H30A I get to choose from H30A, H30B, H30C, H31A, H31B, etc clearly it has managed to match the 'H' and the first number, so why can't it match the whole thing? cheers, simon