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60 PERIODIC-BOUNDARY CONDITIONS

Periodic-boundary conditions are indicated by use of the PBC command. It can take the following options and directive

To define parallelpiped lattice vectors, something like the following would be used

{PBC,LATT\_TYPE='PARAP'
VEC,1.0,0.0,0.0
VEC,0.0,1.5,1.5
VEC,0.0,0.0,1.5
}



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