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The first three lines above set the directory to the current model folder, the fourth line sets the KMP affinity (see KMP Offset Section) and the fifth and final line calls the EFDC+ executable file. Several commands can be added to the end of the final line. In this case -NT4 means number of threads is equal to four (see OMP Section). Another command that may be used is -NOP which sets no pause at the end of the model run. This can be useful when creating automated runs.