diff --git a/Modules/QtWidgets/include/QmitkMultiWidgetLayoutManager.h b/Modules/QtWidgets/include/QmitkMultiWidgetLayoutManager.h
index 2a39a28bf1..4bcc6db371 100644
--- a/Modules/QtWidgets/include/QmitkMultiWidgetLayoutManager.h
+++ b/Modules/QtWidgets/include/QmitkMultiWidgetLayoutManager.h
@@ -1,94 +1,131 @@
 /*===================================================================
 
 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 QMITKMULTIWIDGETLAYOUTMANAGER_H
 #define QMITKMULTIWIDGETLAYOUTMANAGER_H
 
 #include "MitkQtWidgetsExports.h"
 
 #include <QObject>
 
 class QmitkAbstractMultiWidget;
 class QmitkRenderWindowWidget;
 
 /**
-* @brief
+* @brief The layout manager provides different layout-functions that can modify the layout of an QmitkAbstractMultiWidget.
 *
+*   The constructor is used with the specific multi widget that should be modified. The function 'SetLayoutDesign'
+*   can then be used to modify the layout of the multi widget. The function needs to be called with the signal-slot
+*   syntax from a 'QmitkRenderWindow' since it retrieves the specific render window and sets it as the current render window.
+*   Some layouts work with a specific render window (e.g. ONE_BIG / SetOneBigLayout()), so the current render window is
+*   then used by these layout functions.
+*   The publicly accessible layout functions can also be called directly but in order to work the current render window
+*   needs to be set before by using 'SetCurrentRenderWindowWidget'.
 *
 */
 class MITKQTWIDGETS_EXPORT QmitkMultiWidgetLayoutManager : public QObject
 {
   Q_OBJECT
 
 public:
 
   enum class LayoutDesign
   {
     DEFAULT = 0,
     ALL_2D_TOP_3D_BOTTOM,
     ALL_2D_LEFT_3D_RIGHT,
     ONE_BIG,
     ONLY_2D_HORIZONTAL,
     ONLY_2D_VERTICAL,
     ONE_TOP_3D_BOTTOM,
     ONE_LEFT_3D_RIGHT,
     ALL_HORIZONTAL,
     ALL_VERTICAL,
     REMOVE_ONE,
     NONE
   };
 
   QmitkMultiWidgetLayoutManager(QmitkAbstractMultiWidget* multiwidget);
 
   /**
   * @brief This function is called by render window widgets. Given a specific
   *        layout design the layout of the multi widget data member is set with this method.
   */
   void SetLayoutDesign(LayoutDesign layoutDesign);
   /**
   * @brief Allow setting the current render window widget without relying on the sending object.
   *
   *    Calling 'SetLayoutDesign' will overwrite the current render window widget but using the public
   *    layout setter the current render window widget can be defined using the function.
   *    This is necessary for layouts that work with a specific selected render window widget.
   */
   void SetCurrentRenderWindowWidget(QmitkRenderWindowWidget* renderWindowWidget);
 
+  /**
+  * @brief The default layout shows all render windows in a rectangle.
+  */
   void SetDefaultLayout();
+  /**
+  * @brief All 2D render windows are spread horizontally above all 3D render windows.
+  */
   void SetAll2DTop3DBottomLayout();
+  /**
+  * @brief All 2D render windows are spread vertically beneath all 3D render windows.
+  */
   void SetAll2DLeft3DRightLayout();
-
+  /**
+  * @brief The current render window is displayed as a single 'full screen' render window.
+  */
   void SetOneBigLayout();
-
+  /**
+  * @brief All 2D render windows are spread horizontally, no 3D render windows.
+  */
   void SetOnly2DHorizontalLayout();
+  /**
+  * @brief All 2D render windows are spread vertically, no 3D render windows.
+  */
   void SetOnly2DVerticalLayout();
-
+  /**
+  * @brief The current render window is put above all 3D render windows, which are spread
+  *        horizontally below the current render window.
+  */
   void SetOneTop3DBottomLayout();
+  /**
+  * @brief The current render window is put beneath all 3D render windows, which are spread
+  *        vertically beneath the current render window.
+  */
   void SetOneLeft3DRightLayout();
-
+  /**
+  * @brief All 2D and 3D render windows are spread horizontally.
+  */
   void SetAllHorizontalLayout();
+  /**
+  * @brief All 2D and 3D render windows are spread vertically.
+  */
   void SetAllVerticalLayout();
-
+  /**
+  * @brief Hide the current render window.
+  */
   void RemoveOneLayout();
 
 private:
 
   QmitkAbstractMultiWidget* m_MultiWidget;
   QmitkRenderWindowWidget* m_CurrentRenderWindowWidget;
 
 };
 
 #endif // QMITKMULTIWIDGETLAYOUTMANAGER_H