$ gemmi set -h
Usage:
 gemmi set [options] INPUT_FILE OUTPUT_FILE

Modify atom attributes in a coordinate file.

Options:
  -h, --help         Print usage and exit.
  -V, --version      Print version and exit.
  -v, --verbose      Verbose output.
  -B MIN[:MAX]       Set isotropic B-factors to a single value MIN
                     or clamp them to MIN:MAX.
  -O MIN[:MAX]       Set occupancies to a single value or clamp them to MIN:MAX.
  --noise M          Add random shifts, uniform in (-M,M), to x,y,z.
  --shift='DX DY DZ' Translate the model coordinates (units: Angstroms).
  --select=SEL       Apply transformations only to selected atoms (MMDB syntax).
