Description: Creates a PMC material group in the current module. If a PMC group 'label' already exists, the group is activated.
====dielectric_group({{ArgTypeString}} label, {{ArgStringAny}} eps, {{ArgStringAnyArgTypeAny}} sigma, {{ArgStringAnyArgTypeAny}} mu, {{ArgStringAnyArgTypeAny}} rho)====
''Example:dielectric_group("PEC_1","my_eps",0,1,0)''
Description: Creates a Dielectric material group in the current module with the specified material properties. If a Dielectric group 'label' already exists, the group is activated.
====thinwire_group({{ArgTypeString}} label, {{ArgStringAnyArgTypeAny}} radius)====
''Example:thinwire_group("PEC_1",4)''