code: function parse_BrtXF(data, length) {
  	var ixfeParent = data.read_shift(2);
  	var ifmt = data.read_shift(2);
  	parsenoop(data, length-4);
  	return {ixfe:ixfeParent, ifmt:ifmt };
  }
docs: /* [MS-XLSB] 2.4.816 BrtXF