Common formats, such as .xyz, .pdb, .mol2, and .cif, can be used for this purpose. For aNCI and amIGM, which involve time-averaging, a multi-frame .xyz file containing the MD trajectory is required, which can be converted using VMD from the trajectory file produced by MD programs such as GROMACS. For more information about Multiwfn, see the recent introductory article. Multiwfn has a highly detailed manual of more than 1,100 pages and includes a vast number of tutorials, through which chemists can easily learn how to use Multiwfn to perform analyses and readily apply them to their own research.