code: function parse_Obj(blob, length, opts) {
  	if(opts && opts.biff < 8) return parse_BIFF5Obj(blob, length, opts);
  	var cmo = parse_FtCmo(blob, 22); // id, ot, flags
  	var fts = parse_FtArray(blob, length-22, cmo[1]);
  	return { cmo: cmo, ft:fts };
  }
docs: /* [MS-XLS] 2.4.181 TODO: parse all the things!