One thing I have wondered about Coot is when you add new waters into the structure and these go into a molecule called 'Pointer Atoms...', I have never worked out how to get the symmetry mates of these newly inserted waters to appear unless I eventually merge them into the same pdb file as the protein.

As an example, here is a newly inserted water molecule (A6) in Pointer-Atoms close to a 2-fold:

http://www.ucl.ac.uk/~rmhajc0/watersym.jpg

Is there a trick to get its symmetry mate to appear without merging the pdb's?

I am trying to avoid the situation where you accidentally build two or more waters into the same density because the symmetry mates are not showing and have to go through all the waters again afterwards to sort it out. I have checked the 'Show Symmetry' box for that molecule and I have tried changing the radius, etc.

Any clues much appreciated.

Jon.C.