protected override void Parse(string str, ref int pos, int len)
{
base.Parse(str, ref pos, len);
mPosition = ParserSTEP.StripLink(str, ref pos, len);
mRadius = ParserSTEP.StripDouble(str, ref pos, len);
mConstantAttenuation = ParserSTEP.StripDouble(str, ref pos, len);
mDistanceAttenuation = ParserSTEP.StripDouble(str, ref pos, len);
mQuadricAttenuation = ParserSTEP.StripDouble(str, ref pos, len);
}