docs: function parse_PtgFuncVar(blob, length, opts) {
  	blob.l++;
  	var cparams = blob.read_shift(1), tab = opts && opts.biff <= 3 ? [0, blob.read_shift(1)]: parsetab(blob);
  	return [cparams, (tab[0] === 0 ? Ftab : Cetab)[tab[1]]];
  }