A GUI is provided to guide the user when importing DFT data to the VTAnDeM database. Using the command vtandem --open the import dialog (Figure ) can be called. The "Import Compound Data" option (Figure ) is used to import VASP outputs of bulk materials. Elements are imported prior to importing bulk compounds, and each element/compound must be imported one at a time. The data directory for each material must contain files pertaining to the total energy of the material and the number of atoms in the system. The total energy of the system is extracted from the OUTCAR/OSZICAR file, normalized by the number of atoms as specified in the CONTCAR/POSCAR file. The "Import Defects Data" button (Figure ) is used to import data for a compound's point defects. The defect type and its charge states are determined from the names given to each folder.