private function _readFooter()
	{
		$length = self::_GetInt2d($this->_data, $this->_pos + 2);
		$recordData = substr($this->_data, $this->_pos + 4, $length);

		// move stream pointer to next record
		$this->_pos += 4 + $length;

		if (!$this->_readDataOnly) {
			// offset: 0; size: var
			// realized that $recordData can be empty even when record exists
			if ($recordData) {
				if ($this->_version == self::XLS_BIFF8) {
					$string = self::_readUnicodeStringLong($recordData);
				} else {
					$string = $this->_readByteStringShort($recordData);
				}
				$this->_phpSheet->getHeaderFooter()->setOddFooter($string['value']);
				$this->_phpSheet->getHeaderFooter()->setEvenFooter($string['value']);
			}
		}
	}