where NAME is the name of the element (e.g. Cu) and PATH is the path to the directory containing the OUTCAR/OSZICAR and CONTCAR/POSCAR files. The PATH argument can be either the absolute or relative path. Once each element has been imported, competing compounds can be imported with the command vtandem --import_compound NAME PATH where NAME refers to the compound name (e.g. Cu2HgGeTe4) and PATH is the path to the data directory. It is crucial that the elemental systems be imported before any compounds are imported to the database.