Perform a relaxation dispersion optimisation using Flemming Hansen's CATIA.
dir: The directory containing all of the CATIA input files.
binary: The name of the executable CATIA program file.
CATIA will be executed as
[numbers=none] $ catia < Fit.catia
If you would like to use a different CATIA executable file, change the binary name to the appropriate file name. If the file is not located within the environment's path, include the full path in front of the binary file name.