diff --git a/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step03.dox b/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step03.dox
index a298a0e11f..6a419a51a6 100644
--- a/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step03.dox
+++ b/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step03.dox
@@ -1,48 +1,48 @@
  /**
  
  \page Step03Page MITK Tutorial - Step 3: Create 3D view
  
-As in the previous step one or more data sets (many images, surface and other formats) may be loaded. The difference is that they are displayed in a 3D view.
+As in the previous step, one or more data sets (many images, surface and other formats) may be loaded. The difference is that they are displayed in a 3D view.
 The QmitkRenderWindow is now used for displaying a 3D view, by setting the used mapper-slot to Standard3D. 
 Since volume-rendering is a (rather) slow procedure, the default is that images are not displayed in the 3D view.
 
 In Step 3a the default is kept whereas in Step 3b volume rendering is turned on.
 
 As in the previous step, to obtain the result the program has to be executed using the image file bin/CMakeExternals/Source/MITK-Data/Pic3D.nrrd and the surface file src/MITK/Modules/MitkExt/Testing/Data/lungs.vtk.
 
 
 \li \ref Step3.cpp "Step3.cpp" \n
 Contains the code that both creates a 3D view and turns volume rendering on.
 
 
 \section Step3aSection Step 3a - Volume rendering turned off
   
 \image html step3a_result.png 
   
 \dontinclude Step3.cpp
 
 Tell the renderer to create a 3D view:
  
 \skipline // Use it as a 3D view!
 \skipline renderWindow.GetRenderer()->SetMapperID
 
 The rest of the code remains unchanged.
 
 The picture above shows the result of the program when reading both the image and the surface file.
 As volume rendering is off the image is not visible.
  
 \section Step3bSection Step 3b - Volume rendering turned on
  
 \image html step3b_result.png 
  
 Volume Rendering is now turned on as shown in the picture above.
 
 \dontinclude Step3.cpp 
-The property "volumerendering" has to be turned on on the node containing the image.
+The property "volumerendering" has to be enabled on the node containing the image.
  
 \skipline Check
 \until node->SetProperty
   
 \ref Step02Page "[Previous step]" \ref Step04Page "[Next step]" \ref TutorialPage "[Main tutorial page]"
  
   */
diff --git a/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step04.dox b/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step04.dox
index 6696f2e96d..507e4e859b 100644
--- a/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step04.dox
+++ b/Documentation/Doxygen/DeveloperManual/Starting/GettingToKnow/Tutorial/Step04.dox
@@ -1,66 +1,66 @@
 /**
  
 \page Step04Page MITK Tutorial - Step 4: Use several views to explore data
   
 As in Step 2 and Step 3 one or more data sets may be loaded.
 
-Now 3 views on the data are created.
+This now creates three views on the data.
 The QmitkRenderWindow is used for displaying a 3D view as in Step 3, but without volume-rendering.
 Furthermore two 2D views for slicing through the data are created. 
 The class QmitkSliceWidget is used, which is based on the class QmitkRenderWindow, but additionally provides sliders 
 to slice through the data. We create two instances of
 QmitkSliceWidget, one for axial and one for sagittal slicing. Step 4b enhances the program in that the two slices are also shown at their correct position in 3D as well as intersection-line, each in the other 2D view.
 
 As in the previous steps, to obtain the result the program has to be executed using the image file bin/CMakeExternals/Source/MITK-Data/Pic3D.nrrd and the surface file src/MITK/Modules/MitkExt/Testing/Data/lungs.vtk.
 
 \li \ref Step4.cpp "Step4.cpp"\n 
 Contains the code of step 4a + b.
  
 \section Step4aSection Step 4a - Create axial and sagittal view
 
 \image html step4a_result.png 
 
 \dontinclude Step4.cpp
 
 Create a Qt horizontal box for the layout:
 
 \skipline QHBox
 
 Then create a renderwindow:
 
 \skipline QmitkRenderWindow
 \until SetMapperID
 
 Create a 2D view for slicing axially:
 
 \skipline view2
 \until view2.SetData
 
 Then create a 2D view for slicing sagitally.
 
 \skipline view3
 \until view3.SetData
 
 The toplevelWidget is now the new main widget:
 
 \skipline qtapplication
 \skipline toplevelWidget.show
 
 \section Step4bSection Step 4b - Display slice positions
 
 \image html step4b_result.png 
 
 We now want to see the position of the slice in 2D and the slice itself in 3D.
 Therefore it has to be added to the tree:
 
 \dontinclude Step4.cpp
 \skipline ds->Add(view2.GetRenderer()
 \skipline ds->Add(view3.GetRenderer()
 
-Slice positions are now displayed as can be seen in the picture.
+Slice positions are now displayed as shown in the picture.
 
 \dontinclude Step4.cpp
 
 \ref Step03Page "[Previous step]" \ref Step05Page "[Next step]" \ref TutorialPage "[Main tutorial page]"
  
 */