$BCsetting int1 int2 int3 int4 int5 int6 // where int1-6 are integers.
x-, x+, y-, y+, z-, z+. 0: default, 1: CPML, 2: CPML+PEC, 3: PBC, 4: PEC, 5: PMC.
p.s. 2 is not finished.
$BCsetting 1 1 1 1 1 1