docs: function parse_Label(blob, length, opts) {
  	var target = blob.l + length;
  	var cell = parse_XLSCell(blob, 6);
  	if(opts.biff == 2) blob.l++;
  	var str = parse_XLUnicodeString(blob, target - blob.l, opts);
  	cell.val = str;
  	return cell;
  }