[COOT] Covalently bound ligand - bond not seen in coot

[Baldeep]

Hi,

I am trying to refine a covalently bound ligand using CNS and coot. The
ligand forms a disulfide bond with the active site Cys residue. I am unable
to see the bond with coot, but I can see it with pymol. I know I need the
.cif files for the restraints to refine the ligand but do I need the
dictionary file to see this covalent bond in coot? If so, where and how do I
input the dictionary file in coot and CNS (generate files?) for refinement?

Thanks,
Baldeep