parser=argparse.ArgumentParser(description="Rescales shifts in motif lists (MOTLs) generated in PEET with either with a specified scale factor or between two supplied mrc files.")
parser=argparse.ArgumentParser(description="Rescales mrc volumes such as masks or references with either with a specified scale factor or between two supplied mrc files.")
# parser.add_argument("-f", "--file", help="create overlay for a single file",
parser.add_argument('-o','--oldMrc',nargs='?',default='.',help='Old tomogram mrc that the MOTLs have been calculated with.')