diff --git a/src/Graphic3d/Graphic3d_Structure.cdl b/src/Graphic3d/Graphic3d_Structure.cdl
index 1e71d037f5..d142af84e5 100755
--- a/src/Graphic3d/Graphic3d_Structure.cdl
+++ b/src/Graphic3d/Graphic3d_Structure.cdl
@@ -235,9 +235,11 @@ is
 			     Priority	: Integer from Standard )
 	---Level: Public
 	---Purpose: Modifies the order of displaying the structure.
-	--	    Values are between 0 et 10.
-	--	    The priority 10 being displayed first.
-	--	    The default value is 5
+	--	    Values are between 0 and 10.
+	--      Structures are drawn according to their display priorities
+	--      in ascending order.
+	--	    A structure of priority 10 is displayed the last and appears over the others.
+	--	    The default value is 5.
 	--  Category: Methods to modify the class definition
 	--  Warning: If <me> is displayed then the SetDisplayPriority
 	--	    method erase <me> and display <me> with the
diff --git a/src/V3d/V3d_View.cdl b/src/V3d/V3d_View.cdl
index 0d67fc479e..f96274e58d 100755
--- a/src/V3d/V3d_View.cdl
+++ b/src/V3d/V3d_View.cdl
@@ -967,7 +967,10 @@ is
     SetViewingVolume ( me : mutable ; Left, Right, Bottom, Top, ZNear, ZFar : Real from Standard)
         ---Level: Public
         ---Purpose: Sets Z and XY size of the view according to given values
-    --          with respecting the initial view depth (eye position)
+        --          with respecting the initial view depth (eye position).
+        --          Width/heigth aspect ratio should be preserved by the caller
+        --          of this method similarly to SetSize() to avoid unexpected
+        --          visual results like non-uniform scaling of objects in the view. 
                 raises BadValue from Viewer;
         --              If the ZNear<0, ZFar<0 or ZNear>=Zfar.