protected virtual void Parse(string str, ref int pos, int len)
{
mName = ParserSTEP.StripString(str, ref pos, len);
mLightColour = ParserSTEP.StripLink(str, ref pos, len);
mAmbientIntensity = ParserSTEP.StripDouble(str, ref pos, len);
mIntensity = ParserSTEP.StripDouble(str, ref pos, len);
}