{{Note|[[EM.Tempo]]'s default quarter wavelength offset for the domain box and its 8-layer CPML walls are very conservative choices and can be relaxed in many cases. An offset equal to eight free-space grid cells beyond the largest bounding box usually gives a more compact, but still valid, domain box.}}
[[Image:Info_icon.png|30px]] Click here to learn more about the theory of '''[[Basic_FDTD_TheoryBasic_Principles_of_The_Finite_Difference_Time_Domain_Method#Why_Does_FDTD_Need_Domain_TerminationCPML_vs.3F _PML | Perfectly Matched Layer Termination]]'''.
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