Index: src/documentation/content/xdocs/spreadsheet/eval.xml
===================================================================
--- src/documentation/content/xdocs/spreadsheet/eval.xml	(revision 1381157)
+++ src/documentation/content/xdocs/spreadsheet/eval.xml	(working copy)
@@ -309,32 +309,33 @@
       </ul>
     </section>
     <section><title>Formula Evaluation Debugging</title>
-		<p>POI is not perfect and you may stumble across formula evaluation problems (Java exceptions
-		or just different results) in your special use case. To support an easy detailed analysis, a special
-		logging of the full evaluation is provided.</p>
-		<p>The output of this logging may be very large (depends on your EXCEL), so this logging has to be explicitly enabled
-		for each single formula evaluation. Should not be used in production - only for specific development use.</p>
-		<p>Example use:</p>
-		<source>
-	// activate logging to console
-	System.setProperty("org.apache.poi.util.POILogger", "org.apache.poi.util.SystemOutLogger");
-	System.setProperty("poi.log.level", POILogger.INFO + "");
-	
-	// open your file
-	Workbook wb = new HSSFWorkbook(new FileInputStream("foobar.xls"));
-    HSSFFormulaEvaluator fe = (HSSFFormulaEvaluator) wb.getCreationHelper().createFormulaEvaluator();
+        <p>POI is not perfect and you may stumble across formula evaluation problems (Java exceptions
+        or just different results) in your special use case. To support an easy detailed analysis, a special
+        logging of the full evaluation is provided.</p>
+        <p>The output of this logging may be very large (depends on your EXCEL), so this logging has to be explicitly enabled
+        for each single formula evaluation. Should not be used in production - only for specific development use.</p>
+        <p>Example use:</p>
+        <source>
+    // activate logging to console
+    System.setProperty("org.apache.poi.util.POILogger", "org.apache.poi.util.SystemOutLogger");
+    System.setProperty("poi.log.level", POILogger.INFO + "");
+    
+    // open your file
+    Workbook wb = new HSSFWorkbook(new FileInputStream("foobar.xls"));
+    FormulaEvaluator evaluator = wb.getCreationHelper().createFormulaEvaluator();
+
+    // get your cell
+    Cell cell = wb.getSheet(0).getRow(0).getCell(0);        // just a dummy example
 
-	// get your cell
-	Cell cell = wb.getSheet(0).getRow(0).getCell(0);		// just a dummy example
+    // perform debug output for the next evaluate-call only
+    evaluator.setDebugEvaluationOutputForNextEval(true);
+    evaluator.evaluateFormulaCell(cell);
+    evaluator.evaluateFormulaCell(cell);        // no logging performed for this next evaluate-call
+        </source>
+        <p>The special Logger called "POI.FormulaEval" is used (useful if you use the CommonsLogger and a detailed logging configuration).
+        The used log levels are WARN and INFO (for detailed parameter info and results) - the level are so high to allow this
+        special logging without beeing disturbed by the bunch of DEBUG log entries from other classes.</p>
+    </section>
 
-	// perform debug output for the next evaluate-call only
-    fe.setDebugEvaluationOutputForNextEval(true);
-	evaluator.evaluateFormulaCell(cell);
-	evaluator.evaluateFormulaCell(cell);		// no logging performed for this next evaluate-call
-		</source>
-		<p>The special Logger called "POI.FormulaEval" is used (useful if you use the CommonsLogger and a detailed logging configuration).
-		The used log levels are WARN and INFO (for detailed parameter info and results) - the level are so high to allow this
-		special logging without beeing disturbed by the bunch of DEBUG log entries from other classes.</p>
-	</section>
   </body>
 </document>
Index: src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java
===================================================================
--- src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java	(revision 1381157)
+++ src/java/org/apache/poi/ss/usermodel/FormulaEvaluator.java	(working copy)
@@ -114,4 +114,15 @@
      * @param cell
      */
     Cell evaluateInCell(Cell cell);
+
+    /**
+     * Perform detailed output of formula evaluation for next evaluation only?
+     * Is for developer use only (also developers using POI for their XLS files).
+     * Log-Level WARN is for basic info, INFO for detailed information. These quite
+     * high levels are used because you have to explicitly enable this specific logging.
+	 
+     * @param value whether to perform detailed output
+     */
+    void setDebugEvaluationOutputForNextEval(boolean value);
+	
 }
Index: src/java/org/apache/poi/hssf/usermodel/HSSFFormulaEvaluator.java
===================================================================
--- src/java/org/apache/poi/hssf/usermodel/HSSFFormulaEvaluator.java	(revision 1381157)
+++ src/java/org/apache/poi/hssf/usermodel/HSSFFormulaEvaluator.java	(working copy)
@@ -389,14 +389,7 @@
         _bookEvaluator.setIgnoreMissingWorkbooks(ignore);
     }
 
-    /**
-     * @param value whether perform detailed output
-     *
-     * Perform detailed output of formula evaluation for next evaluation only?
-     * Is for developer use only (also developers using POI for their XLS files).
-     * Log-Level WARN is for basic info, INFO for detailed information. These quite
-     * high levels are used because you have to explicitly enable this specific logging.
-     */
+    /** {@inheritDoc} */
     public void setDebugEvaluationOutputForNextEval(boolean value){
         _bookEvaluator.setDebugEvaluationOutputForNextEval(value);
     }
Index: src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFFormulaEvaluator.java
===================================================================
--- src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFFormulaEvaluator.java	(revision 1381157)
+++ src/ooxml/java/org/apache/poi/xssf/usermodel/XSSFFormulaEvaluator.java	(working copy)
@@ -279,4 +279,10 @@
 		}
 		throw new RuntimeException("Unexpected eval class (" + eval.getClass().getName() + ")");
 	}
+	
+    /** {@inheritDoc} */
+    public void setDebugEvaluationOutputForNextEval(boolean value){
+        _bookEvaluator.setDebugEvaluationOutputForNextEval(value);
+    }
+
 }