Output or Read FORCE_CONSTANTS file. Using.TRUE.orWRITEtags, force constants are written into frophorun.yaml and FORCE_CONSTANTS files. The default is.FALSE., which gives no force constants in the files. UsingREADtag, the force constants are read from the FORCE_CONSTANTS file instead of the FORCES file.valuesdefault.FALSE.,WRITEandREADexample.FALSE.
FORCE_CONSTANTS = READ