If any information is specified earlier commands becomes the default for later commands. In this example, we fill an entire simulation box with a diamond cubic lattice. The diamond cubic lattice is made by duplicating a pair of atoms using the repeating cell vectors for an FCC lattice. This box is aligned with the coordinate axis. Values are in angstroms.
Values are in angstroms.
This chooses the repeating cell vectors. Three lines follow this command, one for each vector. On each line are the three components for that vector. FILL GO Generate particles from values specified. The values specified become the defaults for the next FILL GO command.