code: function TbsStoreLoad($idx, $file=false) {
  		$this->TBS->Source = $this->TbsStoreGet($idx, false);
  		$this->TbsCurrIdx = $idx;
  		if ($file===false) $file = $this->TbsGetFileName($idx);
  		$this->TBS->OtbsCurrFile = $file;
  	}
docs: Load a subfile from the store to be the current subfile