protected override void parseFields(List<string> arrFields, ref int ipos)
{
base.parseFields(arrFields, ref ipos);
string str = arrFields[ipos++];
List<string> fields = ParserSTEP.SplitLineFields(str.Substring(1, str.Length - 2));
mInnerCoordIndices = fields.ConvertAll(x => ParserSTEP.SplitListSTPIntegers(x));
}