diff --git a/SoftwareGuide/Latex/SystemOverview.tex b/SoftwareGuide/Latex/SystemOverview.tex
index ecf99df5c6a7fa0c0c990d2f40f7f7f64d983b77..987ed2c63af759ac5bf56703f8e4a5f4ce3df068 100644
--- a/SoftwareGuide/Latex/SystemOverview.tex
+++ b/SoftwareGuide/Latex/SystemOverview.tex
@@ -97,13 +97,13 @@ in the previous chapter two other modules---\code{OTB-Documents} and
 	wrappers using the \href{http://www.swig.org/}{SWIG}
 	package. OTB does not use this system at present.
 
-	\item[Auxiliary / Utilities] Several auxiliary subsystems are 
-        available to supplement other classes in the system. For example,
-        calculators are classes that perform specialized operations in
-        support of filters (e.g., MeanCalculator computes the mean of a
-        sample). Other utilities include GDAL format file
-        support, png, zlib, FLTK / Qt image viewers, and interfaces to the
-        Visualization Toolkit (VTK) system.
+%% 	\item[Auxiliary / Utilities] Several auxiliary subsystems are 
+%%         available to supplement other classes in the system. For example,
+%%         calculators are classes that perform specialized operations in
+%%         support of filters (e.g., MeanCalculator computes the mean of a
+%%         sample). Other utilities include GDAL format file
+%%         support, png, zlib, FLTK / Qt image viewers, and interfaces to the
+%%         Visualization Toolkit (VTK) system.
         
 \end{description}
 
@@ -498,7 +498,7 @@ primarily to support the deformable registration in ITK.
 
 \index{data object} 
 
-There are two principle types of data represented in OTB: images and
+There are two principal types of data represented in OTB: images and
 meshes. This functionality is implemented in the classes 
 Image and Mesh, both of which are subclasses of
 \doxygen{itk}{DataObject}. In OTB, data objects are classes that are meant to