public TblPtg(LittleEndianInput in)  {field_1_first_row = in.readUShort();field_2_first_col = in.readUShort();}
public TblPtg(ILittleEndianInput in1){field_1_first_row = in1.ReadUShort();field_2_first_col = in1.ReadUShort();}