24     private $_rowspans = array();  variable in renderer_plugin_edittable_inverse
589         $this->_rowspans = array();
600         while(isset($this->_rowspans[$this->_key])) {
601             --$this->_rowspans[$this->_key];
602             if($this->_rowspans[$this->_key] === 1) {
603                 unset($this->_rowspans[$this->_key]);
621             $this->_rowspans[$this->_key] = $rowspan;
636         while(isset($this->_rowspans[$this->_key]) && !$this->_ownspan) {
637             --$this->_rowspans[$this->_key];
638             if($this->_rowspans[$this->_key] === 1) {
639                 unset($this->_rowspans[$this->_key]);