code: function parse_PtgName(blob, length, opts) {
  	var type = (blob.read_shift(1) >>> 5) & 0x03;
  	var w = (!opts || (opts.biff >= 8)) ? 4 : 2;
  	var nameindex = blob.read_shift(w);
  	switch(opts.biff) {
  		case 2: blob.l += 5; break;
  		case 3: case 4: blob.l += 8; break;
  		case 5: blob.l += 12; break;
  	}
  	return [type, 0, nameindex];
  }
docs: /* [MS-XLS] 2.5.198.76 ; [MS-XLSB] 2.5.97.60