protected function initListCharDefinition()
    {
        switch ($this->_type) {
            case self::TYPE_ARROW:
                $this->_listCharFont = new PHPRtfLite_Font(10, 'Wingdings');
                $this->_listChar = '\\\'d8';
                break;
            case self::TYPE_CIRCLE:
                $this->_listCharFont = new PHPRtfLite_Font(10, 'Courier New');
                $this->_listChar = ' o';
                break;
            case self::TYPE_DIAMOND:
                $this->_listCharFont = new PHPRtfLite_Font(10, 'Wingdings');
                $this->_listChar = ' v';
                break;
            case self::TYPE_SQUARE:
                $this->_listCharFont = new PHPRtfLite_Font(10, 'Wingdings');
                $this->_listChar = '\\\'a7';
                break;
            // default is bullet
            default:
                $this->_listCharFont = new PHPRtfLite_Font(10, 'Symbol');
                $this->_listChar = '\\\'B7';
        }

        $this->_rtf->registerFont($this->_listCharFont);
    }