function _storeAllXfs()
    {
        // _tmp_format is added by the constructor. We use this to write the default XF's
        // The default font index is 0
        //
        $format = $this->_tmp_format;
        for ($i = 0; $i <= 14; $i++) {
            $xf = $format->getXf('style'); // Style XF
            $this->_append($xf);
        }

        $xf = $format->getXf('cell');      // Cell XF
        $this->_append($xf);

        // User defined XFs
        $total_formats = count($this->_formats);
        for ($i = 0; $i < $total_formats; $i++) {
            $xf = $this->_formats[$i]->getXf('cell');
            $this->_append($xf);
        }
    }