Not sure where you quoting this from. I am looking at the official documentation here
http://www.ccp4.ac.uk/html/watertidy.html which clearly states This program has two purposes. 1. It moves the H2O coordinates to the symmetry related position nearest to the host molecule. 2. It attempts to design an H2O naming system which gives some information about the residue which a particular H2O is hydrogen bonded to. The user inputs chain IDs for host chains and assigns an output ID for the H2Os bonded to this chain. > Is there a program in the gui that adds waters, if not this one? There > is of course arp/warp, but not in windows... > There is an option in refmac gui to use coot to add waters. If you don't want to do extra refinement, just set the number of steps to 0. -- "Hurry up before we all come back to our senses!" Julian, King of Lemurs
