diff --git a/Modules/QtWidgets/QmitkLineEditLevelWindowWidget.cpp b/Modules/QtWidgets/QmitkLineEditLevelWindowWidget.cpp
index cb6cdf8579..9795932318 100644
--- a/Modules/QtWidgets/QmitkLineEditLevelWindowWidget.cpp
+++ b/Modules/QtWidgets/QmitkLineEditLevelWindowWidget.cpp
@@ -1,166 +1,166 @@
 /*===================================================================
 
 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.
 
 ===================================================================*/
 
 #include "QmitkLineEditLevelWindowWidget.h"
 #include "QmitkLevelWindowWidgetContextMenu.h"
 
 #include <mitkRenderingManager.h>
 
 #include <itkCommand.h>
 #include <QValidator>
 #include <QLayout>
 #include <QLineEdit>
 #include <limits>
 
 using namespace std;
 
 /**
 * Constructor
 */
 QmitkLineEditLevelWindowWidget::QmitkLineEditLevelWindowWidget(QWidget* parent, Qt::WindowFlags f)
  : QWidget(parent, f)
 {
   m_Manager = mitk::LevelWindowManager::New();
 
   itk::ReceptorMemberCommand<QmitkLineEditLevelWindowWidget>::Pointer command = itk::ReceptorMemberCommand<QmitkLineEditLevelWindowWidget>::New();
   command->SetCallbackFunction(this, &QmitkLineEditLevelWindowWidget::OnPropertyModified);
   m_ObserverTag = m_Manager->AddObserver(itk::ModifiedEvent(), command);
   m_IsObserverTagSet = true;
 
   m_Contextmenu = new QmitkLevelWindowWidgetContextMenu(this); // true);
 
   QVBoxLayout* layout = new QVBoxLayout( this );
   layout->setMargin(0);
   layout->setSpacing(0);
 
   m_LevelInput = new QLineEdit( this );
   m_LevelInput->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Preferred));
-  m_LevelInput->setToolTip("Edit this to change the center of the levelwindow");
+  m_LevelInput->setToolTip("Edit this field to change the center of the levelwindow.");
   //m_LevelInput->setFrameShape( QLineEdit::LineEditPanel );
   //m_LevelInput->setFrameShadow( QLineEdit::Sunken );
 
   m_WindowInput = new QLineEdit( this );
   m_WindowInput->setSizePolicy( QSizePolicy( QSizePolicy::Expanding, QSizePolicy::Preferred));
-  m_WindowInput->setToolTip("Edit this to change the span of the levelwindow. This number describes the whole span around the center.");
+  m_WindowInput->setToolTip("Edit this field to change the span of the levelwindow. This number describes the whole span around the center.");
   //m_WindowInput->setFrameShape( QLineEdit::LineEditPanel );
   //m_WindowInput->setFrameShadow( QLineEdit::Sunken );
 
   layout->addWidget(m_LevelInput);
   layout->addWidget(m_WindowInput);
 
   // signals and slots connections
   connect( m_LevelInput, SIGNAL(editingFinished()), this, SLOT( SetLevelValue() ) );
   connect( m_WindowInput, SIGNAL(editingFinished()), this, SLOT( SetWindowValue() ) );
 
   // Validator for both LineEdit-widgets, to limit the valid input-range to int.
   //QValidator* validatorWindowInput = new QIntValidator(1, 20000000, this);
   QValidator* validatorWindowInput = new QDoubleValidator(0, numeric_limits<double>::max(), 2, this);
   m_WindowInput->setValidator(validatorWindowInput);
 
   //QValidator* validatorLevelInput = new QIntValidator(-10000000, 10000000, this);
   //QValidator* validatorLevelInput = new QDoubleValidator(numeric_limits<double>::min(), numeric_limits<double>::max(), 2, this);
   //m_LevelInput->setValidator(validatorLevelInput);
 
   this->hide();
 }
 
 QmitkLineEditLevelWindowWidget::~QmitkLineEditLevelWindowWidget()
 {
   if( m_IsObserverTagSet )
   {
     m_Manager->RemoveObserver(m_ObserverTag);
     m_IsObserverTagSet = false;
   }
 }
 
 void QmitkLineEditLevelWindowWidget::OnPropertyModified(const itk::EventObject& )
 {
   try
   {
     m_LevelWindow = m_Manager->GetLevelWindow();
     //setValidator();
     QString level;
     level.setNum((int)(m_LevelWindow.GetLevel()));
     m_LevelInput->setText(level);
     QString window;
     window.setNum((int)(m_LevelWindow.GetWindow()));
     m_WindowInput->setText(window);
     m_LevelInput->setEnabled(!m_LevelWindow.IsFixed());
     m_WindowInput->setEnabled(!m_LevelWindow.IsFixed());
     this->show();
   }
   catch(...)
   {
     try
     {
       this->hide();
     }
     catch(...)
     {
     }
   }
 }
 
 void QmitkLineEditLevelWindowWidget::setLevelWindowManager(mitk::LevelWindowManager* levelWindowManager)
 {
   if( m_IsObserverTagSet )
   {
     m_Manager->RemoveObserver(m_ObserverTag);
     m_IsObserverTagSet = false;
   }
   m_Manager = levelWindowManager;
   if ( m_Manager.IsNotNull() )
   {
     itk::ReceptorMemberCommand<QmitkLineEditLevelWindowWidget>::Pointer command = itk::ReceptorMemberCommand<QmitkLineEditLevelWindowWidget>::New();
     command->SetCallbackFunction(this, &QmitkLineEditLevelWindowWidget::OnPropertyModified);
     m_ObserverTag = m_Manager->AddObserver(itk::ModifiedEvent(), command);
     m_IsObserverTagSet = true;
   }
 }
 
 void QmitkLineEditLevelWindowWidget::SetDataStorage( mitk::DataStorage* ds )
 {
   m_Manager->SetDataStorage(ds);
 }
 
 //read the levelInput and change level and slider when the button "ENTER" was pressed in the windowInput-LineEdit
 void QmitkLineEditLevelWindowWidget::SetLevelValue()
 {
     double level = m_LevelInput->text().toDouble();
     m_LevelWindow.SetLevelWindow(level, m_LevelWindow.GetWindow());
     m_Manager->SetLevelWindow(m_LevelWindow);
     mitk::RenderingManager::GetInstance()->RequestUpdateAll();
 }
 
 //read the windowInput and change window and slider when the button "ENTER" was pressed in the windowInput-LineEdit
 void QmitkLineEditLevelWindowWidget::SetWindowValue()
 {
   double window = m_WindowInput->text().toDouble();
   m_LevelWindow.SetLevelWindow(m_LevelWindow.GetLevel(), window);
   m_Manager->SetLevelWindow(m_LevelWindow);
   mitk::RenderingManager::GetInstance()->RequestUpdateAll();
 }
 
 void QmitkLineEditLevelWindowWidget::contextMenuEvent( QContextMenuEvent * )
 {
   m_Contextmenu->setLevelWindowManager(m_Manager.GetPointer());
   m_Contextmenu->getContextMenu();
 }
 
 mitk::LevelWindowManager* QmitkLineEditLevelWindowWidget::GetManager()
 {
   return m_Manager.GetPointer();
 }