diff --git a/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php b/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
index edae09da..59f993ac 100644
--- a/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
+++ b/Classes/PHPExcel/CachedObjectStorage/DiscISAM.php
@@ -40,14 +40,14 @@ class PHPExcel_CachedObjectStorage_DiscISAM extends PHPExcel_CachedObjectStorage
 	 *
 	 * @var string
 	 */
-	private $_fileName = null;
+	private $_fileName = NULL;
 
 	/**
 	 * File handle for this cache file
 	 *
 	 * @var resource
 	 */
-	private $_fileHandle = null;
+	private $_fileHandle = NULL;
 
 	/**
 	 * Directory/Folder where the cache file is located
diff --git a/Classes/PHPExcel/Style/Supervisor.php b/Classes/PHPExcel/Style/Supervisor.php
new file mode 100644
index 00000000..7e6ca1ec
--- /dev/null
+++ b/Classes/PHPExcel/Style/Supervisor.php
@@ -0,0 +1,132 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (c) 2006 - 2012 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_Style
+ * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license	http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version	##VERSION##, ##DATE##
+ */
+
+
+/**
+ * PHPExcel_Style_Supervisor
+ *
+ * @category   PHPExcel
+ * @package	PHPExcel_Style
+ * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ */
+abstract class PHPExcel_Style_Supervisor
+{
+	/**
+	 * Supervisor?
+	 *
+	 * @var boolean
+	 */
+	protected $_isSupervisor;
+
+	/**
+	 * Parent. Only used for supervisor
+	 *
+	 * @var PHPExcel_Style
+	 */
+	protected $_parent;
+
+	/**
+	 * Create a new PHPExcel_Style_Alignment
+	 *
+	 * @param	boolean	$isSupervisor	Flag indicating if this is a supervisor or not
+	 *									Leave this value at default unless you understand exactly what
+	 *										its ramifications are
+	 */
+	public function __construct($isSupervisor = FALSE)
+	{
+		// Supervisor?
+		$this->_isSupervisor = $isSupervisor;
+	}
+
+	/**
+	 * Bind parent. Only used for supervisor
+	 *
+	 * @param PHPExcel $parent
+	 * @return PHPExcel_Style_Supervisor
+	 */
+	public function bindParent($parent)
+	{
+		$this->_parent = $parent;
+		return $this;
+	}
+
+	/**
+	 * Is this a supervisor or a cell style component?
+	 *
+	 * @return boolean
+	 */
+	public function getIsSupervisor()
+	{
+		return $this->_isSupervisor;
+	}
+
+	/**
+	 * Get the currently active sheet. Only used for supervisor
+	 *
+	 * @return PHPExcel_Worksheet
+	 */
+	public function getActiveSheet()
+	{
+		return $this->_parent->getActiveSheet();
+	}
+
+	/**
+	 * Get the currently active cell coordinate in currently active sheet.
+	 * Only used for supervisor
+	 *
+	 * @return string E.g. 'A1'
+	 */
+	public function getSelectedCells()
+	{
+		return $this->getActiveSheet()->getSelectedCells();
+	}
+
+	/**
+	 * Get the currently active cell coordinate in currently active sheet.
+	 * Only used for supervisor
+	 *
+	 * @return string E.g. 'A1'
+	 */
+	public function getActiveCell()
+	{
+		return $this->getActiveSheet()->getActiveCell();
+	}
+
+	/**
+	 * Implement PHP __clone to create a deep clone, not just a shallow copy.
+	 */
+	public function __clone() {
+		$vars = get_object_vars($this);
+		foreach ($vars as $key => $value) {
+			if ((is_object($value)) && ($key != '_parent')) {
+				$this->$key = clone $value;
+			} else {
+				$this->$key = $value;
+			}
+		}
+	}
+}
diff --git a/Examples/08conditionalformatting2.php b/Examples/08conditionalformatting2.php
new file mode 100644
index 00000000..b4dd93ca
--- /dev/null
+++ b/Examples/08conditionalformatting2.php
@@ -0,0 +1,117 @@
+<?php
+/**
+ * PHPExcel
+ *
+ * Copyright (C) 2006 - 2012 PHPExcel
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this library; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * @category   PHPExcel
+ * @package    PHPExcel
+ * @copyright  Copyright (c) 2006 - 2012 PHPExcel (http://www.codeplex.com/PHPExcel)
+ * @license    http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt	LGPL
+ * @version    ##VERSION##, ##DATE##
+ */
+
+/** Error reporting */
+error_reporting(E_ALL);
+ini_set('display_errors', TRUE);
+ini_set('display_startup_errors', TRUE);
+
+define('EOL',(PHP_SAPI == 'cli') ? PHP_EOL : '<br />');
+
+date_default_timezone_set('Europe/London');
+
+/** Include PHPExcel */
+require_once '../Classes/PHPExcel.php';
+
+
+// Create new PHPExcel object
+echo date('H:i:s') , " Create new PHPExcel object" , EOL;
+$objPHPExcel = new PHPExcel();
+
+// Set document properties
+echo date('H:i:s') , " Set document properties" , EOL;
+$objPHPExcel->getProperties()->setCreator("Maarten Balliauw")
+							 ->setLastModifiedBy("Maarten Balliauw")
+							 ->setTitle("Office 2007 XLSX Test Document")
+							 ->setSubject("Office 2007 XLSX Test Document")
+							 ->setDescription("Test document for Office 2007 XLSX, generated using PHP classes.")
+							 ->setKeywords("office 2007 openxml php")
+							 ->setCategory("Test result file");
+
+
+// Create a first sheet, representing sales data
+echo date('H:i:s') , " Add some data" , EOL;
+$objPHPExcel->setActiveSheetIndex(0);
+$objPHPExcel->getActiveSheet()
+    ->setCellValue('A1', '-0.5')
+    ->setCellValue('A2', '-0.25')
+    ->setCellValue('A3', '0.0')
+    ->setCellValue('A4', '0.25')
+    ->setCellValue('A5', '0.5')
+    ->setCellValue('A6', '0.75')
+    ->setCellValue('A7', '1.0')
+    ->setCellValue('A8', '1.25')
+;
+
+$objPHPExcel->getActiveSheet()->getStyle('A1:A8')
+    ->getNumberFormat()
+    ->setFormatCode(
+        PHPExcel_Style_NumberFormat::FORMAT_PERCENTAGE_00
+    );
+
+
+// Add conditional formatting
+echo date('H:i:s') , " Add conditional formatting" , EOL;
+$objConditional1 = new PHPExcel_Style_Conditional();
+$objConditional1->setConditionType(PHPExcel_Style_Conditional::CONDITION_CELLIS)
+    ->setOperatorType(PHPExcel_Style_Conditional::OPERATOR_LESSTHAN)
+    ->addCondition('0');
+$objConditional1->getStyle()->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_RED);
+
+$objConditional3 = new PHPExcel_Style_Conditional();
+$objConditional3->setConditionType(PHPExcel_Style_Conditional::CONDITION_CELLIS)
+    ->setOperatorType(PHPExcel_Style_Conditional::OPERATOR_GREATERTHANOREQUAL)
+    ->addCondition('1');
+$objConditional3->getStyle()->getFont()->getColor()->setARGB(PHPExcel_Style_Color::COLOR_GREEN);
+
+$conditionalStyles = $objPHPExcel->getActiveSheet()->getStyle('A1')->getConditionalStyles();
+array_push($conditionalStyles, $objConditional1);
+array_push($conditionalStyles, $objConditional3);
+$objPHPExcel->getActiveSheet()->getStyle('A1')->setConditionalStyles($conditionalStyles);
+
+
+//	duplicate the conditional styles across a range of cells
+echo date('H:i:s') , " Duplicate the conditional formatting across a range of cells" , EOL;
+$objPHPExcel->getActiveSheet()->duplicateConditionalStyle(
+				$objPHPExcel->getActiveSheet()->getStyle('A1')->getConditionalStyles(),
+				'A2:A8'
+			  );
+
+
+// Save Excel 2007 file
+echo date('H:i:s') , " Write to Excel2007 format" , EOL;
+$objWriter = PHPExcel_IOFactory::createWriter($objPHPExcel, 'Excel2007');
+$objWriter->save(str_replace('.php', '.xlsx', __FILE__));
+echo date('H:i:s') , " File written to " , str_replace('.php', '.xlsx', pathinfo(__FILE__, PATHINFO_BASENAME)) , EOL;
+
+
+// Echo memory peak usage
+echo date('H:i:s') , " Peak memory usage: " , (memory_get_peak_usage(true) / 1024 / 1024) , " MB" , EOL;
+
+// Echo done
+echo date('H:i:s') , " Done writing file" , EOL;
+echo 'File has been created in ' , getcwd() , EOL;