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

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

		// local pointer in record data
		$offset = 0;

		if (!$this->_readDataOnly) {
			$offset += 12;

			// offset: 12; size: 2; shared feature type, 2 = enhanced protection, 4 = smart tag
			$isf = self::_GetInt2d($recordData, 12);
			if ($isf != 2) {
				// we only read FEAT records of type 2
				return;
			}
			$offset += 2;

			$offset += 5;

			// offset: 19; size: 2; count of ref ranges this feature is on
			$cref = self::_GetInt2d($recordData, 19);
			$offset += 2;

			$offset += 6;

			// offset: 27; size: 8 * $cref; list of cell ranges (like in hyperlink record)
			$cellRanges = array();
			for ($i = 0; $i < $cref; ++$i) {
				try {
					$cellRange = $this->_readBIFF8CellRangeAddressFixed(substr($recordData, 27 + 8 * $i, 8));
				} catch (PHPExcel_Exception $e) {
					return;
				}
				$cellRanges[] = $cellRange;
				$offset += 8;
			}

			// offset: var; size: var; variable length of feature specific data
			$rgbFeat = substr($recordData, $offset);
			$offset += 4;

			// offset: var; size: 4; the encrypted password (only 16-bit although field is 32-bit)
			$wPassword = self::_GetInt4d($recordData, $offset);
			$offset += 4;

			// Apply range protection to sheet
			if ($cellRanges) {
				$this->_phpSheet->protectCells(implode(' ', $cellRanges), strtoupper(dechex($wPassword)), true);
			}
		}
	}