diff --git a/Modules/IGT/IO/mitkNavigationDataRecorder.h b/Modules/IGT/IO/mitkNavigationDataRecorder.h
index 6c94245432..f12ab65711 100644
--- a/Modules/IGT/IO/mitkNavigationDataRecorder.h
+++ b/Modules/IGT/IO/mitkNavigationDataRecorder.h
@@ -1,122 +1,119 @@
 /*===================================================================
 
 The Medical Imaging Interaction Toolkit (MITK)
 
 Copyright (c) German Cancer Research Center,
 Division of Medical and Biological Informatics.
 All rights reserved.
 
 This software is distributed WITHOUT ANY WARRANTY; without
 even the implied warranty of MERCHANTABILITY or FITNESS FOR
 A PARTICULAR PURPOSE.
 
 See LICENSE.txt or http://www.mitk.org for details.
 
 ===================================================================*/
 
 #ifndef _MITK_NavigationDataRecorder_H
 #define _MITK_NavigationDataRecorder_H
 
 #include "mitkNavigationDataToNavigationDataFilter.h"
 #include "mitkNavigationData.h"
 #include "mitkNavigationDataSet.h"
 
 #include <iostream>
 
 #include <mitkRealTimeClock.h>
 
 namespace mitk
 {
   /**Documentation
-  * \brief This class records NavigationData objects.
+  * \brief This class records NavigationData objects into NavigationDataSets.
   *
-  * The output of this class is formated as a XML document.
-  *
-  * Internal this class uses streams for recording NavigationData objects. Therefore different types of output are possible
-  * and can be set with the SetOutputMode() method. The default output is directed to the console. If you want to save into a
-  * file you have to set a file name and the path. The recording is started with the call of the method StartRecording(). Now
-  * every Update() stores the current state of the added NavigationDatas. With StopRecording() the stream is stopped. With
-  * another call of StartRecording() the output is written to a new file with incremented filename counter.
+  * The recording is started with the call of the method StartRecording(). Now
+  * every Update() stores the current state of the added NavigationDatas into the NavigationDataSet.
+  * With StopRecording() the stream is stopped, but can be resumed anytime.
+  * To start recording to a new NavigationDataSet, call ResetRecording();
   *
   * \warning Do not add inputs while the recorder ist recording. The recorder can't handle that and will cause a nullpointer exception.
   * \ingroup IGT
   */
 
   class MitkIGT_EXPORT NavigationDataRecorder : public NavigationDataToNavigationDataFilter
   {
   public:
 
     mitkClassMacro( NavigationDataRecorder, NavigationDataToNavigationDataFilter );
 
     itkNewMacro( Self );
 
     /**
-    * \brief Returns whether the NavigationDataRecorder is recording or not
+    * \brief Returns whether the NavigationDataRecorder is currently recording or not
     */
     itkGetMacro(Recording, bool);
 
     /**
     * \brief Returns the set that contains all of the recorded data.
     */
     itkGetMacro(NavigationDataSet, mitk::NavigationDataSet::Pointer);
 
     /**
-    * \brief Sets a limit of recorded data sets / frames. Recording will be stopped if the number is reached. -1 disables the limit, -1 is default value as well.
+    * \brief Sets a limit of recorded data sets / frames. Recording will be stopped if the number is reached. values < 1 disable this behaviour. Default is -1.
     */
     itkSetMacro(RecordCountLimit, int);
 
     /**
     * \brief Returns whether to use the navigationdata's time stamp or to create a new one upon recording.
     */
     itkGetMacro(StandardizeTime, bool);
 
     /**
     * \brief If set to false, the navigationDatas Timestamp will be used. If set to false, the recorder
     * will generate a timestamp when it copies the data to the navigationdataset.
     */
     itkSetMacro(StandardizeTime, bool);
 
     /**
     * \brief Starts recording NavigationData into the NAvigationDataSet
     */
     void StartRecording();
 
     /**
     * \brief Stops StopsRecording to the NavigationDataSet.
     *
     * Recording can be resumed to the same Dataset by just calling StartRecording() again.
     * Call ResetRecording() to start recording to a new Dataset;
     */
     void StopRecording();
 
     /**
     * \brief Resets the Datasets and the timestamp, so a new recording can happen.
     *
     * Do not forget to save the old Dataset, it will be lost after calling this function.
     */
     void ResetRecording();
 
   protected:
 
     virtual void GenerateData();
 
     NavigationDataRecorder();
 
     virtual ~NavigationDataRecorder();
 
     unsigned int m_NumberOfInputs; ///< counts the numbers of added input NavigationDatas
 
     mitk::NavigationDataSet::Pointer m_NavigationDataSet;
 
     bool m_Recording; ///< indicates whether the recording is started or not
 
     bool m_StandardizeTime; //< indicates whether one should use the timestamps in NavigationData or create new timestamps upon recording
 
     bool m_StandardizedTimeInitialized; //< set to true the first time start recording is called.
 
     int m_RecordCountLimit; ///< limits the number of frames, recording will be stopped if the limit is reached. -1 disables the limit
 
     mitk::RealTimeClock::Pointer m_SystemTimeClock;  ///< system time clock for system time tag in output xml file
   };
 }
 #endif // #define _MITK_POINT_SET_SOURCE_H