code: function TbsStorePark() {
  		if ($this->TbsCurrIdx!==false) {
  			$this->TbsStoreLst[$this->TbsCurrIdx] = array('src'=>$this->TBS->Source, 'onshow'=>true);
  			$this->TBS->Source = '';
  			$this->TbsCurrIdx = false;
  		}
  	}
docs: Save the last opened subfile into the store, and close the subfile