diff --git a/idl/GEOM_Gen.idl b/idl/GEOM_Gen.idl
index 7241c256d..cd8f8c808 100644
--- a/idl/GEOM_Gen.idl
+++ b/idl/GEOM_Gen.idl
@@ -391,7 +391,7 @@ module GEOM
      *
      *  This function is useful for the compounds only; for simple shapes it
      *  exactly the same value as GetShapeType().
-     *  Note, that compounds are procesed recursively.
+     *  Note, that compounds are processed recursively.
      *
      *  \sa GetShapeType(), GetTopologyType(), GetMaxShapeType()
      */
@@ -402,7 +402,7 @@ module GEOM
      *
      *  This function is useful for the compounds only; for simple shapes it
      *  exactly the same value as GetShapeType().
-     *  Note, that compounds are procesed recursively.
+     *  Note, that compounds are processed recursively.
      *
      *  \sa GetShapeType(), GetTopologyType(), GetMinShapeType()
      */
@@ -1903,7 +1903,7 @@ module GEOM
      *  \param theBase Base shape to be extruded.
      *  \param thePath Path shape to extrude the base shape along it.
      *  \param theVec Vector defines a constant binormal direction to keep the
-     *                same angle beetween the Direction and the sections
+     *                same angle between the Direction and the sections
      *                along the sweep surface.
      *  \param IsGenerateGroups flag that tells if it is necessary to
      *         return groups (true) or not (false).
@@ -4184,8 +4184,8 @@ module GEOM
     SALOMEDS::TMPFile GetTexture(in long theID, out long theWidth, out long theHeight);
 
     /*!
-     * \brief Get list of all avaiable texture IDs
-     * \return list of all texture IDs avaiable for the current study
+     * \brief Get list of all available texture IDs
+     * \return list of all texture IDs available for the current study
      */
     ListOfLong GetAllTextures();
 
@@ -4544,7 +4544,7 @@ module GEOM
     /*!
      *  \brief Detect self-intersections of the given shape with algorithm based on mesh intersections.
      *  \param theShape Shape to check validity of.
-     *  \param theDeflection Linear deflection coefficient that specifies quality of tesselation.
+     *  \param theDeflection Linear deflection coefficient that specifies quality of tessellation.
      *  \param theTolerance Specifies a distance between sub-shapes used for detecting gaps:
      *                       - if \a theTolerance <= 0, algorithm detects intersections
      *                       - if \a theTolerance > 0, algorithm detects gaps
@@ -4557,9 +4557,9 @@ module GEOM
 					out ListOfLong theIntersections);
 
     /*!
-     *  \brief Check boolean and partition operations agruments.
-     *  \param theShape the agrument of an operation to be checked.
-     *  \return TRUE if the agrument is valid for a boolean or partition
+     *  \brief Check boolean and partition operations arguments.
+     *  \param theShape the argument of an operation to be checked.
+     *  \return TRUE if the argument is valid for a boolean or partition
      *          operation; FALSE otherwise.
      */
     boolean CheckBOPArguments (in GEOM_Object theShape);
@@ -4571,7 +4571,7 @@ module GEOM
      *  \param theTolerance Specifies a distance between shapes used for detecting gaps:
      *                       - if \a theTolerance <= 0, algorithm detects intersections
      *                       - if \a theTolerance > 0, algorithm detects gaps
-     *  \param theDeflection Linear deflection coefficient that specifies quality of tesselation:
+     *  \param theDeflection Linear deflection coefficient that specifies quality of tessellation:
      *                       - if \a theDeflection <= 0, default deflection 0.001 is used
      *  \param theIntersections1 Output: contains list of sub-shapes IDs from 1st shape that localize intersection
      *  \param theIntersections2 Output: contains list of sub-shapes IDs from 2nd shape that localize intersection
@@ -5044,7 +5044,7 @@ module GEOM
     
     /*!
      *  \brief Returns a GEOM_Object defined by its IOR
-     *  \param theIOR a string containg an IOR of the requested GEOM_Object
+     *  \param theIOR a string containing an IOR of the requested GEOM_Object
      */
     GEOM_Object GetIORFromString (in string theIOR);
 
diff --git a/src/AdvancedEngine/AdvancedEngine_IOperations.cxx b/src/AdvancedEngine/AdvancedEngine_IOperations.cxx
index 4af7dd3b6..1641097db 100644
--- a/src/AdvancedEngine/AdvancedEngine_IOperations.cxx
+++ b/src/AdvancedEngine/AdvancedEngine_IOperations.cxx
@@ -1832,7 +1832,7 @@ TopoDS_Shape AdvancedEngine_IOperations::MakeThicknessReduction (gp_Ax2 theAxes,
     StdFail_NotDone::Raise("Cannot build cones of thickness reduction");
   BRepAlgoAPI_Cut cut1 (ConeExt.Shape(), ConeInt.Shape());
   if (!cut1.IsDone())
-    StdFail_NotDone::Raise("Coudn't build transition part of thickness reduction");
+    StdFail_NotDone::Raise("Couldn't build transition part of thickness reduction");
   TopoDS_Shape aReduction = cut1.Shape();
 
   // Build the thin part, if required
@@ -1846,7 +1846,7 @@ TopoDS_Shape AdvancedEngine_IOperations::MakeThicknessReduction (gp_Ax2 theAxes,
       StdFail_NotDone::Raise("Cannot build cylinders of thickness reduction");
     BRepAlgoAPI_Cut cut2 (CExt.Shape(), CInt.Shape());
     if (!cut2.IsDone())
-      StdFail_NotDone::Raise("Coudn't build thin part of thickness reduction");
+      StdFail_NotDone::Raise("Couldn't build thin part of thickness reduction");
     aThinPart = cut2.Shape();
   }
 
diff --git a/src/AdvancedEngine/AdvancedEngine_PipeTShapeDriver.cxx b/src/AdvancedEngine/AdvancedEngine_PipeTShapeDriver.cxx
index 4549680fb..dffa0b5f5 100644
--- a/src/AdvancedEngine/AdvancedEngine_PipeTShapeDriver.cxx
+++ b/src/AdvancedEngine/AdvancedEngine_PipeTShapeDriver.cxx
@@ -338,13 +338,13 @@ TopoDS_Shape AdvancedEngine_PipeTShapeDriver::MakePipeTShape (const double r1, c
   // Remove small radius main pipe
   BRepAlgoAPI_Cut cut1 (fuse1.Shape(), C1Int.Shape());
   if (!cut1.IsDone()) {
-    StdFail_NotDone::Raise("Coudn't cut cylinders");
+    StdFail_NotDone::Raise("Couldn't cut cylinders");
   }
 
   // Remove small radius incident pipe => Te
   BRepAlgoAPI_Cut Te (cut1.Shape(), C2Int.Shape());
   if (!Te.IsDone()) {
-    StdFail_NotDone::Raise("Coudn't cut cylinders");
+    StdFail_NotDone::Raise("Couldn't cut cylinders");
   }
 
   TopoDS_Shape aShape = Te.Shape();
diff --git a/src/BasicGUI/BasicGUI_PointDlg.cxx b/src/BasicGUI/BasicGUI_PointDlg.cxx
index 66326b97d..5d7668a8a 100644
--- a/src/BasicGUI/BasicGUI_PointDlg.cxx
+++ b/src/BasicGUI/BasicGUI_PointDlg.cxx
@@ -683,7 +683,7 @@ void BasicGUI_PointDlg::CheckBoxClicked()
 
 
 //=================================================================================
-// funcion  : getParameter()
+// function  : getParameter()
 // purpose  :
 //=================================================================================
 double BasicGUI_PointDlg::getParameter() const
@@ -693,7 +693,7 @@ double BasicGUI_PointDlg::getParameter() const
 
 
 //=================================================================================
-// funcion  : getUParameter()
+// function  : getUParameter()
 // purpose  :
 //=================================================================================
 double BasicGUI_PointDlg::getUParameter() const
@@ -703,7 +703,7 @@ double BasicGUI_PointDlg::getUParameter() const
 
 
 //=================================================================================
-// funcion  : getVParameter()
+// function  : getVParameter()
 // purpose  :
 //=================================================================================
 double BasicGUI_PointDlg::getVParameter() const
diff --git a/src/BlockFix/BlockFix.cxx b/src/BlockFix/BlockFix.cxx
index 3c095f058..30f2505d9 100644
--- a/src/BlockFix/BlockFix.cxx
+++ b/src/BlockFix/BlockFix.cxx
@@ -95,7 +95,7 @@ static void FixResult(const TopoDS_Shape& result,
 {
   for (TopExp_Explorer ex_f(result,TopAbs_FACE); ex_f.More(); ex_f.Next()) {
     TopoDS_Shape aShape = Context->Apply(ex_f.Current().Oriented(TopAbs_FORWARD));
-    // face coud not be dropped or splitted on this step
+    // face could not be dropped or split on this step
     TopoDS_Face aFace = TopoDS::Face(aShape);
     TopLoc_Location L;
     Handle(Geom_Surface) Surf = BRep_Tool::Surface(aFace,L);
diff --git a/src/CurveCreator/CurveCreator_UtilsICurve.hxx b/src/CurveCreator/CurveCreator_UtilsICurve.hxx
index 33af24245..804c81737 100644
--- a/src/CurveCreator/CurveCreator_UtilsICurve.hxx
+++ b/src/CurveCreator/CurveCreator_UtilsICurve.hxx
@@ -58,7 +58,7 @@ public:
                                             CurveCreator_ICurve* theCurve );
 
   /**
-   * Returns whethe the container has the value
+   * Returns whether the container has the value
    * \param theList a container of values
    * \param theValue a value
    */
diff --git a/src/CurveCreator/CurveCreator_Widget.cxx b/src/CurveCreator/CurveCreator_Widget.cxx
index a76f408f1..ae0c67d91 100644
--- a/src/CurveCreator/CurveCreator_Widget.cxx
+++ b/src/CurveCreator/CurveCreator_Widget.cxx
@@ -1591,7 +1591,7 @@ void CurveCreator_Widget::convert( const CurveCreator_ICurve::SectionToPointList
 }
 
 /**
- * Returns whethe the container has the value
+ * Returns whether the container has the value
  * \param theList a container of values
  * \param theValue a value
  */
diff --git a/src/EntityGUI/EntityGUI_FieldDlg.cxx b/src/EntityGUI/EntityGUI_FieldDlg.cxx
index 58d99914e..f74de4a98 100644
--- a/src/EntityGUI/EntityGUI_FieldDlg.cxx
+++ b/src/EntityGUI/EntityGUI_FieldDlg.cxx
@@ -485,7 +485,7 @@ void EntityGUI_FieldDlg::StepTable::setEditable (bool isEditable,
 
 //=======================================================================
 // name    : EntityGUI_FieldDlg::StepTable::isEditable
-// Purpose : Verify wheter cell is editable
+// Purpose : Verify whether cell is editable
 //=======================================================================
 bool EntityGUI_FieldDlg::StepTable::isEditable (int row, int col) const
 {
diff --git a/src/EntityGUI/EntityGUI_SketcherDlg.cxx b/src/EntityGUI/EntityGUI_SketcherDlg.cxx
index 29b0692c2..2a1863026 100644
--- a/src/EntityGUI/EntityGUI_SketcherDlg.cxx
+++ b/src/EntityGUI/EntityGUI_SketcherDlg.cxx
@@ -627,7 +627,7 @@ void EntityGUI_SketcherDlg::RectClicked()
 {
   InitClick();
   
-  // Connect the selction manager (disconnected in InitClick())
+  // Connect the selection manager (disconnected in InitClick())
   connect( myGeometryGUI->getApp()->selectionMgr(),
        SIGNAL( currentSelectionChanged() ), this, SLOT( SelectionIntoArgument() ) );
   
diff --git a/src/GEOM/GEOM_IField.hxx b/src/GEOM/GEOM_IField.hxx
index d6da53b27..4092b5f9a 100644
--- a/src/GEOM/GEOM_IField.hxx
+++ b/src/GEOM/GEOM_IField.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Field creation.
+//NOTE: This is an interface to a function for the Field creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMAlgo/GEOMAlgo_ShapeInfo.cxx b/src/GEOMAlgo/GEOMAlgo_ShapeInfo.cxx
index 6eaf087dc..3614245da 100644
--- a/src/GEOMAlgo/GEOMAlgo_ShapeInfo.cxx
+++ b/src/GEOMAlgo/GEOMAlgo_ShapeInfo.cxx
@@ -429,7 +429,7 @@ void GEOMAlgo_ShapeInfo::Dump()const
     break;
     //
   default:
-    printf(" * not implememted yet\n");
+    printf(" * not implemented yet\n");
     break;
   }
 }
diff --git a/src/GEOMBase/GEOMBase.h b/src/GEOMBase/GEOMBase.h
index 1ec882ca1..58319d39b 100644
--- a/src/GEOMBase/GEOMBase.h
+++ b/src/GEOMBase/GEOMBase.h
@@ -66,7 +66,7 @@ public :
                                                  const bool shapesOnly = false );
   static QString      GetShapeTypeString( const TopoDS_Shape& shape );
 
-  /* Convertions */
+  /* Conversions */
   static Handle(GEOM_AISShape)
                       ConvertIOinGEOMAISShape( const Handle(SALOME_InteractiveObject)& IO,
                                                bool onlyInActiveView = false );
diff --git a/src/GEOMBase/GEOMBase_Helper.cxx b/src/GEOMBase/GEOMBase_Helper.cxx
index c38769a9a..cbd5e5e6c 100755
--- a/src/GEOMBase/GEOMBase_Helper.cxx
+++ b/src/GEOMBase/GEOMBase_Helper.cxx
@@ -967,7 +967,7 @@ bool GEOMBase_Helper::onAccept( const bool publish, const bool useTransaction, b
 
 //================================================================
 // Function : showError
-// Purpose  : Shows a message box with infromation about an error taken from getOperation()->GetErrorCode()
+// Purpose  : Shows a message box with information about an error taken from getOperation()->GetErrorCode()
 //================================================================
 void GEOMBase_Helper::showError()
 {
diff --git a/src/GEOMBase/GEOMBase_Helper.h b/src/GEOMBase/GEOMBase_Helper.h
index a62b2f129..feaf74a83 100755
--- a/src/GEOMBase/GEOMBase_Helper.h
+++ b/src/GEOMBase/GEOMBase_Helper.h
@@ -134,7 +134,7 @@ protected:
   // should be published in a study.
 
   void showError();
-  // Shows a message box with infromation about an error taken from getOperation()->GetErrorCode()
+  // Shows a message box with information about an error taken from getOperation()->GetErrorCode()
   void showError( const QString& msg );
   // Shows a error message followed by <msg>
 
diff --git a/src/GEOMGUI/GEOMGUI_DimensionProperty.h b/src/GEOMGUI/GEOMGUI_DimensionProperty.h
index a2397968c..a074da494 100644
--- a/src/GEOMGUI/GEOMGUI_DimensionProperty.h
+++ b/src/GEOMGUI/GEOMGUI_DimensionProperty.h
@@ -135,14 +135,14 @@ public:
     /*!
      * \brief Inits property fields from the passed length object.
      * \param theIO [in] the interactive presentation.
-     * \param theLCS [in] the local coordiante system of parent object.
+     * \param theLCS [in] the local coordinate system of parent object.
      */
     void Init( const Handle(AIS_LengthDimension)& theIO, const gp_Ax3& theLCS );
 
     /*!
      * \brief Updates length object properties from the fields.
      * \param theIO [in/out] the interactive presentation.
-     * \param theLCS [in] the local coordiante system of parent object.
+     * \param theLCS [in] the local coordinate system of parent object.
      */
     void Update( Handle(AIS_LengthDimension)& theIO, const gp_Ax3& theLCS );
 
@@ -160,7 +160,7 @@ public:
     void FromValues(int& theIt, const std::vector<double>& theValues);
 
     /*!
-     * \brief Overload comparsion.
+     * \brief Overload comparison.
      */
     bool operator == (const Length &theOther) const;
     bool operator != (const Length &theOther) const { return !(operator == (theOther)); }
@@ -203,14 +203,14 @@ public:
     /*!
      * \brief Inits property fields from the passed length object.
      * \param theIO [in] the interactive presentation.
-     * \param theLCS [in] the local coordiante system of parent object.
+     * \param theLCS [in] the local coordinate system of parent object.
      */
     void Init( const Handle(AIS_DiameterDimension)& theIO, const gp_Ax3& theLCS );
 
     /*!
      * \brief Updates length object properties from the fields.
      * \param theIO [in/out] the interactive presentation.
-     * \param theLCS [in] the local coordiante system of parent object.
+     * \param theLCS [in] the local coordinate system of parent object.
      */
     void Update( Handle(AIS_DiameterDimension)& theIO, const gp_Ax3& theLCS );
 
@@ -228,7 +228,7 @@ public:
     void FromValues(int& theIt, const std::vector<double>& theValues);
 
     /*!
-     * \brief Overload comparsion.
+     * \brief Overload comparison.
      */
     bool operator == (const Diameter &theOther) const;
     bool operator != (const Diameter &theOther) const { return !(operator == (theOther)); }
@@ -273,14 +273,14 @@ public:
     /*!
      * \brief Inits property fields from the passed length object.
      * \param theIO [in] the interactive presentation.
-     * \param theLCS [in] the local coordiante system of parent object.
+     * \param theLCS [in] the local coordinate system of parent object.
      */
     void Init( const Handle(AIS_AngleDimension)& theIO, const gp_Ax3& theLCS );
 
     /*!
      * \brief Updates length object properties from the fields.
      * \param theIO [in/out] the interactive presentation.
-     * \param theLCS [in] the local coordiante system of parent object.
+     * \param theLCS [in] the local coordinate system of parent object.
      */
     void Update( Handle(AIS_AngleDimension)& theIO, const gp_Ax3& theLCS );
 
@@ -298,7 +298,7 @@ public:
     void FromValues(int& theIt, const std::vector<double>& theValues);
 
     /*!
-     * \brief Overload comparsion.
+     * \brief Overload comparison.
      */
     bool operator == (const Angle &theOther) const;
     bool operator != (const Angle &theOther) const { return !(operator == (theOther)); }
@@ -352,12 +352,12 @@ public:
   operator QString() const;
 
   /*!
-   * \brief Overload comparsion.
+   * \brief Overload comparison.
    */
   bool operator == (const GEOMGUI_DimensionProperty &theOther) const;
 
   /*!
-   * \brief Overload comparsion.
+   * \brief Overload comparison.
    */
   bool operator != (const GEOMGUI_DimensionProperty &theOther) const
   {
diff --git a/src/GEOMGUI/GEOM_Displayer.cxx b/src/GEOMGUI/GEOM_Displayer.cxx
index c08cee809..6925d8d22 100755
--- a/src/GEOMGUI/GEOM_Displayer.cxx
+++ b/src/GEOMGUI/GEOM_Displayer.cxx
@@ -1672,7 +1672,7 @@ void GEOM_Displayer::Update( SALOME_VTKPrs* prs )
 //=================================================================
 /*!
  *  GEOM_Displayer::BuildPrs
- *  Build presentation accordint to the current viewer type
+ *  Build presentation according to the current viewer type
  */
 //=================================================================
 SALOME_Prs* GEOM_Displayer::BuildPrs( GEOM::GEOM_Object_ptr theObj )
@@ -1701,7 +1701,7 @@ SALOME_Prs* GEOM_Displayer::BuildPrs( GEOM::GEOM_Object_ptr theObj )
 //=================================================================
 /*!
  *  GEOM_Displayer::BuildPrs
- *  Build presentation accordint to the current viewer type
+ *  Build presentation according to the current viewer type
  */
 //=================================================================
 SALOME_Prs* GEOM_Displayer::BuildPrs( const TopoDS_Shape& theShape )
diff --git a/src/GEOMGUI/GEOM_Displayer.h b/src/GEOMGUI/GEOM_Displayer.h
index d9184ec54..712fe8316 100755
--- a/src/GEOMGUI/GEOM_Displayer.h
+++ b/src/GEOMGUI/GEOM_Displayer.h
@@ -129,7 +129,7 @@ public:
   /* Update visibility state */
   void          UpdateVisibility( SALOME_View*, const SALOME_Prs*, bool );
 
-  /* build presentation accordint to the current viewer type*/
+  /* build presentation according to the current viewer type*/
   SALOME_Prs*   BuildPrs  ( GEOM::GEOM_Object_ptr );
   SALOME_Prs*   BuildPrs  ( const TopoDS_Shape& );
 
diff --git a/src/GEOMImpl/GEOMImpl_ArchimedeDriver.cxx b/src/GEOMImpl/GEOMImpl_ArchimedeDriver.cxx
index 3f42292a6..fbd647b68 100644
--- a/src/GEOMImpl/GEOMImpl_ArchimedeDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_ArchimedeDriver.cxx
@@ -116,7 +116,7 @@ Standard_Integer GEOMImpl_ArchimedeDriver::Execute(Handle(TFunction_Logbook)& lo
     double volume = VOL.CalculateVolume(Zmax) * aWaterDensity;
 
     char msg[100] = "";
-    sprintf(msg, "shape sinks to the bottom : Weigth max = %.1f", volume);
+    sprintf(msg, "shape sinks to the bottom : Weight max = %.1f", volume);
 
     StdFail_NotDone::Raise(msg);
   }
diff --git a/src/GEOMImpl/GEOMImpl_GlueDriver.cxx b/src/GEOMImpl/GEOMImpl_GlueDriver.cxx
index 20ab8d47f..d014f5503 100644
--- a/src/GEOMImpl/GEOMImpl_GlueDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_GlueDriver.cxx
@@ -336,7 +336,7 @@ TopoDS_Shape GEOMImpl_GlueDriver::GlueFaces
   aGA.SetTolerance(theTolerance);
   aGA.SetKeepNonSolids(doKeepNonSolids);
 
-  // 2. Detect interferred shapes
+  // 2. Detect interfered shapes
   aGA.Detect();
 
   //Standard_Integer iWrnDetect = aGA.WarningStatus();
@@ -451,7 +451,7 @@ TopoDS_Shape GEOMImpl_GlueDriver::GlueWithWarnings (const TopoDS_Shape& theShape
   aGA.SetTolerance(theTolerance);
   aGA.SetKeepNonSolids(doKeepNonSolids);
 
-  // 2. Detect interferred shapes
+  // 2. Detect interfered shapes
   aGA.Detect();
 
   //modified by NIZNHY-PKV Tue Mar 13 14:07:12 2012f
@@ -609,7 +609,7 @@ TopoDS_Shape GEOMImpl_GlueDriver::GlueByList (const TopoDS_Shape& theShape,
   aGA.SetTolerance(theTolerance);
   aGA.SetKeepNonSolids(doKeepNonSolids);
 
-  // 2. Detect interferred shapes
+  // 2. Detect interfered shapes
   aGA.Detect();
 
   //modified by NIZNHY-PKV Tue Mar 13 14:07:12 2012f
diff --git a/src/GEOMImpl/GEOMImpl_HealingDriver.cxx b/src/GEOMImpl/GEOMImpl_HealingDriver.cxx
index c75a775b2..5014ef7e8 100644
--- a/src/GEOMImpl/GEOMImpl_HealingDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_HealingDriver.cxx
@@ -63,7 +63,7 @@
 
 //=======================================================================
 //function :  raiseNotDoneExeption
-//purpose  :  global function: forms error message and raises exeption
+//purpose  :  global function: forms error message and raises exception
 //=======================================================================
 void raiseNotDoneExeption( const int theErrorStatus )
 {
diff --git a/src/GEOMImpl/GEOMImpl_IArc.hxx b/src/GEOMImpl/GEOMImpl_IArc.hxx
index f95c5cd9e..344dbfb46 100644
--- a/src/GEOMImpl/GEOMImpl_IArc.hxx
+++ b/src/GEOMImpl/GEOMImpl_IArc.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Arc creation.
+//NOTE: This is an interface to a function for the Arc creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IArchimede.hxx b/src/GEOMImpl/GEOMImpl_IArchimede.hxx
index ac0009cdd..5d0da1171 100644
--- a/src/GEOMImpl/GEOMImpl_IArchimede.hxx
+++ b/src/GEOMImpl/GEOMImpl_IArchimede.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Archimede operation.
+//NOTE: This is an interface to a function for the Archimede operation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IBoolean.hxx b/src/GEOMImpl/GEOMImpl_IBoolean.hxx
index 470739bd5..499d89517 100644
--- a/src/GEOMImpl/GEOMImpl_IBoolean.hxx
+++ b/src/GEOMImpl/GEOMImpl_IBoolean.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Common, Cut and Fuse creation.
+//NOTE: This is an interface to a function for the Common, Cut and Fuse creation.
 //
 #include "GEOM_Function.hxx"
 #include "TColStd_HSequenceOfTransient.hxx"
diff --git a/src/GEOMImpl/GEOMImpl_IBox.hxx b/src/GEOMImpl/GEOMImpl_IBox.hxx
index 5a152c933..fd571341a 100644
--- a/src/GEOMImpl/GEOMImpl_IBox.hxx
+++ b/src/GEOMImpl/GEOMImpl_IBox.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Box creation.
+//NOTE: This is an interface to a function for the Box creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ICircle.hxx b/src/GEOMImpl/GEOMImpl_ICircle.hxx
index 70a71b6f0..d87ccb8cc 100644
--- a/src/GEOMImpl/GEOMImpl_ICircle.hxx
+++ b/src/GEOMImpl/GEOMImpl_ICircle.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Circle creation.
+//NOTE: This is an interface to a function for the Circle creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ICone.hxx b/src/GEOMImpl/GEOMImpl_ICone.hxx
index a55d2b561..6d534aebe 100644
--- a/src/GEOMImpl/GEOMImpl_ICone.hxx
+++ b/src/GEOMImpl/GEOMImpl_ICone.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Cone creation.
+//NOTE: This is an interface to a function for the Cone creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ICopy.hxx b/src/GEOMImpl/GEOMImpl_ICopy.hxx
index a3ec0c733..6fc5df8ea 100644
--- a/src/GEOMImpl/GEOMImpl_ICopy.hxx
+++ b/src/GEOMImpl/GEOMImpl_ICopy.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Copy operation.
+//NOTE: This is an interface to a function for the Copy operation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ICylinder.hxx b/src/GEOMImpl/GEOMImpl_ICylinder.hxx
index 3215ffca8..b37cb553a 100644
--- a/src/GEOMImpl/GEOMImpl_ICylinder.hxx
+++ b/src/GEOMImpl/GEOMImpl_ICylinder.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Cylinder creation.
+//NOTE: This is an interface to a function for the Cylinder creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IDisk.hxx b/src/GEOMImpl/GEOMImpl_IDisk.hxx
index e3dd2d52f..32b43637e 100755
--- a/src/GEOMImpl/GEOMImpl_IDisk.hxx
+++ b/src/GEOMImpl/GEOMImpl_IDisk.hxx
@@ -17,7 +17,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Disk creation.
+//NOTE: This is an interface to a function for the Disk creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IEllipse.hxx b/src/GEOMImpl/GEOMImpl_IEllipse.hxx
index 0a84af66f..3db6b40c8 100644
--- a/src/GEOMImpl/GEOMImpl_IEllipse.hxx
+++ b/src/GEOMImpl/GEOMImpl_IEllipse.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Ellipse creation.
+//NOTE: This is an interface to a function for the Ellipse creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IExtract.hxx b/src/GEOMImpl/GEOMImpl_IExtract.hxx
index b5905696e..93a6d5dae 100644
--- a/src/GEOMImpl/GEOMImpl_IExtract.hxx
+++ b/src/GEOMImpl/GEOMImpl_IExtract.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Offset creation.
+//NOTE: This is an interface to a function for the Offset creation.
 //
 #include "GEOM_Function.hxx"
 #include <TColStd_HArray1OfInteger.hxx>
diff --git a/src/GEOMImpl/GEOMImpl_IFace.hxx b/src/GEOMImpl/GEOMImpl_IFace.hxx
index 1c240cb7d..ece051018 100755
--- a/src/GEOMImpl/GEOMImpl_IFace.hxx
+++ b/src/GEOMImpl/GEOMImpl_IFace.hxx
@@ -17,7 +17,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Face creation.
+//NOTE: This is an interface to a function for the Face creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IFilling.hxx b/src/GEOMImpl/GEOMImpl_IFilling.hxx
index 812ac132c..059c501b2 100644
--- a/src/GEOMImpl/GEOMImpl_IFilling.hxx
+++ b/src/GEOMImpl/GEOMImpl_IFilling.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Filling operation.
+//NOTE: This is an interface to a function for the Filling operation.
 //
 #include "GEOM_Function.hxx"
 #include <TColStd_HSequenceOfTransient.hxx>
diff --git a/src/GEOMImpl/GEOMImpl_IImportExport.hxx b/src/GEOMImpl/GEOMImpl_IImportExport.hxx
index c0ef51087..de71434f9 100644
--- a/src/GEOMImpl/GEOMImpl_IImportExport.hxx
+++ b/src/GEOMImpl/GEOMImpl_IImportExport.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Import Export operation.
+//NOTE: This is an interface to a function for the Import Export operation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ILine.hxx b/src/GEOMImpl/GEOMImpl_ILine.hxx
index 0e186f741..1257dc8c4 100644
--- a/src/GEOMImpl/GEOMImpl_ILine.hxx
+++ b/src/GEOMImpl/GEOMImpl_ILine.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the vector creation.
+//NOTE: This is an interface to a function for the vector creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IOffset.hxx b/src/GEOMImpl/GEOMImpl_IOffset.hxx
index fea75eac9..21287c81a 100644
--- a/src/GEOMImpl/GEOMImpl_IOffset.hxx
+++ b/src/GEOMImpl/GEOMImpl_IOffset.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Offset creation.
+//NOTE: This is an interface to a function for the Offset creation.
 //
 #include "GEOM_Function.hxx"
 #include <TColStd_HArray1OfInteger.hxx>
diff --git a/src/GEOMImpl/GEOMImpl_IPartition.hxx b/src/GEOMImpl/GEOMImpl_IPartition.hxx
index bcb58e5a0..a37e95368 100644
--- a/src/GEOMImpl/GEOMImpl_IPartition.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPartition.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Partition creation.
+//NOTE: This is an interface to a function for the Partition creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IPipe.hxx b/src/GEOMImpl/GEOMImpl_IPipe.hxx
index 798b3348b..35c730678 100644
--- a/src/GEOMImpl/GEOMImpl_IPipe.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPipe.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Pipe creation.
+//NOTE: This is an interface to a function for the Pipe creation.
 //
 #ifndef _GEOMImpl_IPIPE_HXX_
 #define _GEOMImpl_IPIPE_HXX_
diff --git a/src/GEOMImpl/GEOMImpl_IPipeDiffSect.hxx b/src/GEOMImpl/GEOMImpl_IPipeDiffSect.hxx
index c0dd78003..bfe638a26 100644
--- a/src/GEOMImpl/GEOMImpl_IPipeDiffSect.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPipeDiffSect.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Pipe creation.
+//NOTE: This is an interface to a function for the Pipe creation.
 
 #ifndef _GEOMImpl_IPIPEDIFFSECT_HXX_
 #define _GEOMImpl_IPIPEDIFFSECT_HXX_
diff --git a/src/GEOMImpl/GEOMImpl_IPipeShellSect.hxx b/src/GEOMImpl/GEOMImpl_IPipeShellSect.hxx
index bd508bfd4..a816e42e4 100644
--- a/src/GEOMImpl/GEOMImpl_IPipeShellSect.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPipeShellSect.hxx
@@ -17,7 +17,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Pipe creation.
+//NOTE: This is an interface to a function for the Pipe creation.
 
 #ifndef _GEOMImpl_IPIPESHELLSECT_HXX_
 #define _GEOMImpl_IPIPESHELLSECT_HXX_
diff --git a/src/GEOMImpl/GEOMImpl_IPlane.hxx b/src/GEOMImpl/GEOMImpl_IPlane.hxx
index 0ad501049..34b6c352a 100644
--- a/src/GEOMImpl/GEOMImpl_IPlane.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPlane.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the vector creation.
+//NOTE: This is an interface to a function for the vector creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IPosition.hxx b/src/GEOMImpl/GEOMImpl_IPosition.hxx
index 6aa23a52d..44702db0d 100644
--- a/src/GEOMImpl/GEOMImpl_IPosition.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPosition.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Setting In Position.
+//NOTE: This is an interface to a function for the Setting In Position.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IPrism.hxx b/src/GEOMImpl/GEOMImpl_IPrism.hxx
index ecfc91e64..06982fd7e 100644
--- a/src/GEOMImpl/GEOMImpl_IPrism.hxx
+++ b/src/GEOMImpl/GEOMImpl_IPrism.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Prism creation.
+//NOTE: This is an interface to a function for the Prism creation.
 
 #include "GEOM_Function.hxx"
 // #include <GEOMImpl_Mode.hxx>  TEST
diff --git a/src/GEOMImpl/GEOMImpl_IRevolution.hxx b/src/GEOMImpl/GEOMImpl_IRevolution.hxx
index 9a7f9bf90..cbbc52b66 100644
--- a/src/GEOMImpl/GEOMImpl_IRevolution.hxx
+++ b/src/GEOMImpl/GEOMImpl_IRevolution.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Revolution creation.
+//NOTE: This is an interface to a function for the Revolution creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IScale.hxx b/src/GEOMImpl/GEOMImpl_IScale.hxx
index f819ac140..5db120a78 100644
--- a/src/GEOMImpl/GEOMImpl_IScale.hxx
+++ b/src/GEOMImpl/GEOMImpl_IScale.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Scale creation.
+//NOTE: This is an interface to a function for the Scale creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IShapeExtend.hxx b/src/GEOMImpl/GEOMImpl_IShapeExtend.hxx
index 004bc142b..6bdb18092 100644
--- a/src/GEOMImpl/GEOMImpl_IShapeExtend.hxx
+++ b/src/GEOMImpl/GEOMImpl_IShapeExtend.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the extended shape creation.
+//NOTE: This is an interface to a function for the extended shape creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ISphere.hxx b/src/GEOMImpl/GEOMImpl_ISphere.hxx
index 248c697c1..bbc5e176f 100644
--- a/src/GEOMImpl/GEOMImpl_ISphere.hxx
+++ b/src/GEOMImpl/GEOMImpl_ISphere.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Sphere creation.
+//NOTE: This is an interface to a function for the Sphere creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_IThruSections.hxx b/src/GEOMImpl/GEOMImpl_IThruSections.hxx
index f0d04e927..91303ee9a 100644
--- a/src/GEOMImpl/GEOMImpl_IThruSections.hxx
+++ b/src/GEOMImpl/GEOMImpl_IThruSections.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Pipe creation.
+//NOTE: This is an interface to a function for the Pipe creation.
 //
 #include "GEOM_Function.hxx"
 #include <TColStd_HSequenceOfTransient.hxx>
diff --git a/src/GEOMImpl/GEOMImpl_ITorus.hxx b/src/GEOMImpl/GEOMImpl_ITorus.hxx
index ed224a03f..3c04a7cb6 100644
--- a/src/GEOMImpl/GEOMImpl_ITorus.hxx
+++ b/src/GEOMImpl/GEOMImpl_ITorus.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Torus creation.
+//NOTE: This is an interface to a function for the Torus creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_ITransferData.cxx b/src/GEOMImpl/GEOMImpl_ITransferData.cxx
index e4ae42a6e..e6e11f659 100644
--- a/src/GEOMImpl/GEOMImpl_ITransferData.cxx
+++ b/src/GEOMImpl/GEOMImpl_ITransferData.cxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Transfer Data functionality.
+//NOTE: This is an interface to a function for the Transfer Data functionality.
 //
 
 
diff --git a/src/GEOMImpl/GEOMImpl_ITransferData.hxx b/src/GEOMImpl/GEOMImpl_ITransferData.hxx
index acded66d7..a29294649 100644
--- a/src/GEOMImpl/GEOMImpl_ITransferData.hxx
+++ b/src/GEOMImpl/GEOMImpl_ITransferData.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Transfer Data functionality.
+//NOTE: This is an interface to a function for the Transfer Data functionality.
 //
 
 
diff --git a/src/GEOMImpl/GEOMImpl_ITranslate.hxx b/src/GEOMImpl/GEOMImpl_ITranslate.hxx
index d48d438cd..c128d03ac 100755
--- a/src/GEOMImpl/GEOMImpl_ITranslate.hxx
+++ b/src/GEOMImpl/GEOMImpl_ITranslate.hxx
@@ -20,7 +20,7 @@
 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 //
 
-//NOTE: This is an intreface to a function for the Translate creation.
+//NOTE: This is an interface to a function for the Translate creation.
 //
 #include "GEOM_Function.hxx"
 
diff --git a/src/GEOMImpl/GEOMImpl_PipeDriver.cxx b/src/GEOMImpl/GEOMImpl_PipeDriver.cxx
index 5bb530e39..d84397a4c 100644
--- a/src/GEOMImpl/GEOMImpl_PipeDriver.cxx
+++ b/src/GEOMImpl/GEOMImpl_PipeDriver.cxx
@@ -569,7 +569,7 @@ static void FindNextPairOfFaces(const TopoDS_Shape& aCurFace,
     bool stat =  FillForOtherEdges(F1other,E1,V1,FF);
     if (!stat) {
       if (aCI) delete aCI;
-      Standard_ConstructionError::Raise("FindNextPairOfFaces: Can not mapping other egdes");
+      Standard_ConstructionError::Raise("FindNextPairOfFaces: Can not map other edges");
     }
 
     FindNextPairOfFaces(F1other, aMapEdgeFaces1, aMapEdgeFaces2, FF, aCI);
@@ -919,7 +919,7 @@ TopoDS_Shape GEOMImpl_PipeDriver::CreatePipeWithDifferentSections
       }
     }
     if (nbEdges<Edges.Length()) {
-        // one of edges was splitted => we have to update WirePath
+        // one of edges was split => we have to update WirePath
         BRep_Builder B;
         TopoDS_Wire W;
         B.MakeWire(W);
@@ -1824,7 +1824,7 @@ static TopoDS_Shape CreatePipeForShellSections(const TopoDS_Wire& aWirePath,
         bool stat =  FillForOtherEdges(FS1,E1,V11,FF);
         if (!stat) {
           if (aCI) delete aCI;
-          Standard_ConstructionError::Raise("FindForOtherEdges: Can not mapping other egdes");
+          Standard_ConstructionError::Raise("FindForOtherEdges: Can not map other edges");
         }
 
       }
diff --git a/src/GEOMImpl/GEOMImpl_PolylineDumper.cxx b/src/GEOMImpl/GEOMImpl_PolylineDumper.cxx
index 3a34f1bcb..52e71ee4f 100644
--- a/src/GEOMImpl/GEOMImpl_PolylineDumper.cxx
+++ b/src/GEOMImpl/GEOMImpl_PolylineDumper.cxx
@@ -91,7 +91,7 @@ Standard_Boolean GEOMImpl_PolylineDumper::Dump
     aPD << theObject << " = pl.result(";
 
     if (myWorkingPlane.IsNull()) {
-      // Add coodinates of working plane.
+      // Add coordinates of working plane.
       Standard_Integer i;
 
       aPD << "[";
diff --git a/src/GEOMToolsGUI/GEOMToolsGUI.cxx b/src/GEOMToolsGUI/GEOMToolsGUI.cxx
index bd79254a3..d79a68e10 100644
--- a/src/GEOMToolsGUI/GEOMToolsGUI.cxx
+++ b/src/GEOMToolsGUI/GEOMToolsGUI.cxx
@@ -77,7 +77,7 @@ static QString getParentComponent( _PTR( SObject ) obj )
 
 //=====================================================================================
 // function : inUse
-// purpose  : check if the object(s) passed as the the second arguments are used
+// purpose  : check if the object(s) passed as the second arguments are used
 //            by the other objects in the study
 //=====================================================================================
 static bool inUse( _PTR(Study) study, const QString& component, const QMap<QString,QString>& objects )
diff --git a/src/GEOMToolsGUI/GEOMToolsGUI_1.cxx b/src/GEOMToolsGUI/GEOMToolsGUI_1.cxx
index 8f463bcbf..723dd270d 100644
--- a/src/GEOMToolsGUI/GEOMToolsGUI_1.cxx
+++ b/src/GEOMToolsGUI/GEOMToolsGUI_1.cxx
@@ -124,7 +124,7 @@
 // Below macro, when uncommented, switches on simplified (more performant) algorithm
 // of auto-color picking up
 #define SIMPLE_AUTOCOLOR
-// Below macro, when defined, switches on automatic layouting of OCC and Dependecy views
+// Below macro, when defined, switches on automatic layouting of OCC and Dependency views
 // on Show Dependencies operation
 #define LAYOUT_DEPVIEW
 
diff --git a/src/GEOMToolsGUI/GEOMToolsGUI_MaterialPropertiesDlg.cxx b/src/GEOMToolsGUI/GEOMToolsGUI_MaterialPropertiesDlg.cxx
index bc62c01c0..c96f80821 100644
--- a/src/GEOMToolsGUI/GEOMToolsGUI_MaterialPropertiesDlg.cxx
+++ b/src/GEOMToolsGUI/GEOMToolsGUI_MaterialPropertiesDlg.cxx
@@ -67,7 +67,7 @@
 */
 
 /*!
-  \brief Contructor
+  \brief Constructor
  */
 GEOMToolsGUI_MaterialList::GEOMToolsGUI_MaterialList( QWidget* parent )
   : QListWidget( parent )
diff --git a/src/GEOMUtils/GEOMUtils.hxx b/src/GEOMUtils/GEOMUtils.hxx
index 20201f799..c91556ae3 100644
--- a/src/GEOMUtils/GEOMUtils.hxx
+++ b/src/GEOMUtils/GEOMUtils.hxx
@@ -254,10 +254,10 @@ namespace GEOMUtils
   Standard_EXPORT bool CheckShape( TopoDS_Shape& shape, bool checkGeometry = false );
 
   /*!
-   * \brief Check boolean and partition operations agruments
+   * \brief Check boolean and partition operations arguments
    *
-   * \param theShape the agrument of an operation to be checked
-   * \return \c true if the agrument is valid for a boolean or partition
+   * \param theShape the argument of an operation to be checked
+   * \return \c true if the argument is valid for a boolean or partition
    *         operation or \c false otherwise
    */
   Standard_EXPORT bool CheckBOPArguments(const TopoDS_Shape &theShape);
diff --git a/src/GEOM_I/GEOM_Gen_i.cc b/src/GEOM_I/GEOM_Gen_i.cc
index 34365e199..fc6cee5c4 100644
--- a/src/GEOM_I/GEOM_Gen_i.cc
+++ b/src/GEOM_I/GEOM_Gen_i.cc
@@ -919,7 +919,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapesO (SALOMEDS::Study_ptr     theStudy,
   CORBA::String_var anIORo = _orb->object_to_string(theObject);
   SALOMEDS::SObject_var aSO = theStudy->FindObjectIOR(anIORo.in());
   //PTv, IMP 0020001, The salome object <aSO>
-  // is not obligatory in case of invokation from script
+  // is not obligatory in case of invocation from script
   // if (CORBA::is_nil(aSO))
   //  return aParts._retn();
 
@@ -949,7 +949,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapesO (SALOMEDS::Study_ptr     theS
   CORBA::String_var anIORo = _orb->object_to_string(theObject);
   SALOMEDS::SObject_var aSO = theStudy->FindObjectIOR(anIORo.in());
   //PTv, IMP 0020001, The salome object <aSO>
-  // is not obligatory in case of invokation from script
+  // is not obligatory in case of invocation from script
   // if (CORBA::is_nil(aSO))
   //  return aParts._retn();
 
@@ -1033,7 +1033,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreSubShapes(SALOMEDS::Study_ptr     theStudy,
 {
   GEOM::ListOfGO_var aParts = new GEOM::ListOfGO;
   //PTv, IMP 0020001, The salome object <theSObject>
-  //     is not obligatory in case of invokation from script
+  //     is not obligatory in case of invocation from script
   if (CORBA::is_nil(theStudy) || CORBA::is_nil(theObject) /*|| CORBA::is_nil(theSObject)*/)
     return aParts._retn();
 
@@ -1625,7 +1625,7 @@ GEOM::ListOfGO* GEOM_Gen_i::RestoreGivenSubShapes(SALOMEDS::Study_ptr     theStu
 {
   GEOM::ListOfGO_var aParts = new GEOM::ListOfGO;
   //PTv, IMP 0020001, The salome object <theSObject>
-  //     is not obligatory in case of invokation from script
+  //     is not obligatory in case of invocation from script
   if (CORBA::is_nil(theStudy) || CORBA::is_nil(theObject) /*|| CORBA::is_nil(theSObject)*/)
     return aParts._retn();
 
diff --git a/src/GEOM_I/GEOM_IMeasureOperations_i.cc b/src/GEOM_I/GEOM_IMeasureOperations_i.cc
index ad7fe1b03..80340bb7c 100644
--- a/src/GEOM_I/GEOM_IMeasureOperations_i.cc
+++ b/src/GEOM_I/GEOM_IMeasureOperations_i.cc
@@ -826,7 +826,7 @@ CORBA::Boolean GEOM_IMeasureOperations_i::CheckBOPArguments
   bool isGood = false;
 
   if (!aShape.IsNull()) {
-    // Check BOP agruments
+    // Check BOP arguments
     isGood = GetOperations()->CheckBOPArguments(aShape);
   }
 
diff --git a/src/GEOM_SWIG/GEOM_TestHealing.py b/src/GEOM_SWIG/GEOM_TestHealing.py
index 4b7951596..dc22c1cee 100644
--- a/src/GEOM_SWIG/GEOM_TestHealing.py
+++ b/src/GEOM_SWIG/GEOM_TestHealing.py
@@ -21,7 +21,7 @@
 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 #
 
-#  GEOM_SWIG : binding of C++ implementaion with Python
+#  GEOM_SWIG : binding of C++ implementation with Python
 #  File   : GEOM_TestHealing.py
 #  Author : Julia DOROVSKIKH
 #  Module : GEOM
diff --git a/src/GEOM_SWIG/GEOM_blocks.py b/src/GEOM_SWIG/GEOM_blocks.py
index c33b2c446..43f1e1016 100644
--- a/src/GEOM_SWIG/GEOM_blocks.py
+++ b/src/GEOM_SWIG/GEOM_blocks.py
@@ -21,7 +21,7 @@
 # See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
 #
 
-#  GEOM GEOM_SWIG : binding of C++ implementaion with Python
+#  GEOM GEOM_SWIG : binding of C++ implementation with Python
 #  File   : GEOM_blocks.py
 #  Author : Julia DOROVSKIKH
 #  Module : GEOM
diff --git a/src/GEOM_SWIG/geomBuilder.py b/src/GEOM_SWIG/geomBuilder.py
index 79dd09036..bf056947d 100644
--- a/src/GEOM_SWIG/geomBuilder.py
+++ b/src/GEOM_SWIG/geomBuilder.py
@@ -4289,7 +4289,7 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
         #  @param theBase Base shape to be extruded.
         #  @param thePath Path shape to extrude the base shape along it.
         #  @param theVec Vector defines a constant binormal direction to keep the
-        #                same angle beetween the direction and the sections
+        #                same angle between the direction and the sections
         #                along the sweep surface.
         #  @param IsGenerateGroups flag that tells if it is necessary to
         #         create groups. It is equal to False by default.
@@ -4318,7 +4318,7 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
                 theBase Base shape to be extruded.
                 thePath Path shape to extrude the base shape along it.
                 theVec Vector defines a constant binormal direction to keep the
-                       same angle beetween the direction and the sections
+                       same angle between the direction and the sections
                        along the sweep surface.
                 IsGenerateGroups flag that tells if it is necessary to
                                  create groups. It is equal to False by default.
@@ -11462,7 +11462,7 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
 
         ## Detect self-intersections of the given shape with algorithm based on mesh intersections.
         #  @param theShape Shape to check.
-        #  @param theDeflection Linear deflection coefficient that specifies quality of tesselation:
+        #  @param theDeflection Linear deflection coefficient that specifies quality of tessellation:
         #         - if \a theDeflection <= 0, default deflection 0.001 is used
         #  @param theTolerance Specifies a distance between sub-shapes used for detecting gaps:
         #         - if \a theTolerance <= 0, algorithm detects intersections (default behavior)
@@ -11477,7 +11477,7 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
 
             Parameters:
                 theShape Shape to check.
-                theDeflection Linear deflection coefficient that specifies quality of tesselation:
+                theDeflection Linear deflection coefficient that specifies quality of tessellation:
                     - if theDeflection <= 0, default deflection 0.001 is used
                 theTolerance Specifies a distance between shapes used for detecting gaps:
                     - if theTolerance <= 0, algorithm detects intersections (default behavior)
@@ -11491,20 +11491,20 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
             RaiseIfFailed("CheckSelfIntersectionsFast", self.MeasuOp)
             return IsValid
 
-        ## Check boolean and partition operations agruments.
-        #  @param theShape the agrument of an operation to be checked
-        #  @return TRUE if the agrument is valid for a boolean or partition
+        ## Check boolean and partition operations arguments.
+        #  @param theShape the argument of an operation to be checked
+        #  @return TRUE if the argument is valid for a boolean or partition
         #          operation; FALSE otherwise.
         @ManageTransactions("MeasuOp")
         def CheckBOPArguments(self, theShape):
             """
-            Check boolean and partition operations agruments.
+            Check boolean and partition operations arguments.
 
             Parameters:
-                theShape the agrument of an operation to be checked
+                theShape the argument of an operation to be checked
 
             Returns:
-                TRUE if the agrument is valid for a boolean or partition
+                TRUE if the argument is valid for a boolean or partition
                 operation; FALSE otherwise.
             """
             return self.MeasuOp.CheckBOPArguments(theShape)
@@ -11515,7 +11515,7 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
         #  @param theTolerance Specifies a distance between shapes used for detecting gaps:
         #         - if \a theTolerance <= 0, algorithm detects intersections (default behavior)
         #         - if \a theTolerance > 0, algorithm detects gaps
-        #  @param theDeflection Linear deflection coefficient that specifies quality of tesselation:
+        #  @param theDeflection Linear deflection coefficient that specifies quality of tessellation:
         #         - if \a theDeflection <= 0, default deflection 0.001 is used
         #  @return TRUE, if there are intersections (gaps) between source shapes
         #  @return List of sub-shapes IDs from 1st shape that localize intersection.
@@ -11533,7 +11533,7 @@ class geomBuilder(object, GEOM._objref_GEOM_Gen):
                 theTolerance Specifies a distance between shapes used for detecting gaps:
                     - if theTolerance <= 0, algorithm detects intersections (default behavior)
                     - if theTolerance > 0, algorithm detects gaps
-                theDeflection Linear deflection coefficient that specifies quality of tesselation:
+                theDeflection Linear deflection coefficient that specifies quality of tessellation:
                     - if theDeflection <= 0, default deflection 0.001 is used
  
             Returns:
diff --git a/src/GEOM_SWIG_WITHIHM/libGEOM_Swig.cxx b/src/GEOM_SWIG_WITHIHM/libGEOM_Swig.cxx
index 2d3306979..0efbe7f0d 100644
--- a/src/GEOM_SWIG_WITHIHM/libGEOM_Swig.cxx
+++ b/src/GEOM_SWIG_WITHIHM/libGEOM_Swig.cxx
@@ -508,7 +508,7 @@ public:
 
 /*!
   \brief Initialize GEOM module's engine
-  \return \c true if initialization succeedes or \c false otherwise
+  \return \c true if initialization succeeds or \c false otherwise
 */
 bool GEOM_Swig::initGeomGen()
 {
diff --git a/src/Material/Material_ResourceMgr.cxx b/src/Material/Material_ResourceMgr.cxx
index 02e3fabe7..1c09c4360 100644
--- a/src/Material/Material_ResourceMgr.cxx
+++ b/src/Material/Material_ResourceMgr.cxx
@@ -101,10 +101,10 @@ Material_ResourceMgr* Material_ResourceMgr::resourceMgr()
 }
 
 /*!
-  \brief Get list of avaiable materials
+  \brief Get list of available materials
   \param theType material type
   \param theSort if \c true (default), returns a list of materials sorted by name
-  \return list of avaiable materials names
+  \return list of available materials names
 */
 QStringList Material_ResourceMgr::materials( MaterialType theType, bool theSort )
 {
diff --git a/src/MeasureGUI/MeasureGUI_DimensionCreateTool.cxx b/src/MeasureGUI/MeasureGUI_DimensionCreateTool.cxx
index 47a2f38de..a03a0f4e8 100644
--- a/src/MeasureGUI/MeasureGUI_DimensionCreateTool.cxx
+++ b/src/MeasureGUI/MeasureGUI_DimensionCreateTool.cxx
@@ -1076,7 +1076,7 @@ void MeasureGUI_DimensionCreateTool::ChooseLengthFlyoutsFromBnd( SeqOfDirs& theD
   {
     const gp_Pln& aPlane = aPlaneIt.Value();
 
-    // transform bounding box to orthogonal coordiantes relative to
+    // transform bounding box to orthogonal coordinates relative to
     // dimension points P1, P2 (x-axis) and plane direction (z-axis),
     // where y coordinates will correspond to flyout direction against
     // the dimension point line
diff --git a/src/OBJECT/GEOM_Annotation.cxx b/src/OBJECT/GEOM_Annotation.cxx
index 808893ac8..d45fed6c8 100755
--- a/src/OBJECT/GEOM_Annotation.cxx
+++ b/src/OBJECT/GEOM_Annotation.cxx
@@ -209,7 +209,7 @@ void GEOM_Annotation::SetAttachPoint( const gp_Pnt& thePoint )
 
 // =======================================================================
 // function : SetHilightShape
-// purpose  : Sets shape (annotated shape) that will be used for hilighting.
+// purpose  : Sets shape (annotated shape) that will be used for highlighting.
 // =======================================================================
 void GEOM_Annotation::SetHilightShape( const TopoDS_Shape& theShape )
 {
diff --git a/src/OBJECT/GEOM_Annotation.hxx b/src/OBJECT/GEOM_Annotation.hxx
index 3594a1b6d..794402491 100755
--- a/src/OBJECT/GEOM_Annotation.hxx
+++ b/src/OBJECT/GEOM_Annotation.hxx
@@ -122,10 +122,10 @@ public:
   //! Returns attachment point of extension line.
   const gp_Pnt& GetAttachPoint() const { return myAttach; }
 
-  //! Sets shape (annotated shape) that will be used for hilighting.
+  //! Sets shape (annotated shape) that will be used for highlighting.
   Standard_EXPORT void SetHilightShape( const TopoDS_Shape& theShape );
 
-  //! Returns the hilighting shape.
+  //! Returns the highlighting shape.
   const TopoDS_Shape HilightShape() const { return myShape; }
 
 public:
@@ -283,10 +283,10 @@ private:
   gp_Pnt myStartPosition; //!< Position before starting dragging operation.
   Standard_Boolean myIsScreenFixed; //!< Flag indicating whether "screen fixed" positioning mode is turned on or off.
   Standard_Boolean myIsAutoHide; //!< Flag indicating whether "auto-hiding" option is turned on.
-  Standard_Boolean myIsDepthCulling; //!< Flag indiciating whether the "depth culling" is turned on.
+  Standard_Boolean myIsDepthCulling; //!< Flag indicating whether the "depth culling" is turned on.
   HighlightMode myHilightMode; //!< Highlight mode for presentation.
   TCollection_ExtendedString myText; //!< Text string of the label presentation.
-  TopoDS_Shape myShape; //!< Hilighting shape.
+  TopoDS_Shape myShape; //!< Highlighting shape.
 
 private:
 
diff --git a/src/RepairGUI/RepairGUI_ShapeProcessDlg.cxx b/src/RepairGUI/RepairGUI_ShapeProcessDlg.cxx
index c073038e7..4a7e27ada 100755
--- a/src/RepairGUI/RepairGUI_ShapeProcessDlg.cxx
+++ b/src/RepairGUI/RepairGUI_ShapeProcessDlg.cxx
@@ -842,7 +842,7 @@ GEOM::string_array* RepairGUI_ShapeProcessDlg::getParameters( const GEOM::string
   for ( i = 0, j = 0; i < theOperators.length(); i++ )
     j += myValMap[ QString( theOperators[i].in() ) ].size();
   
-  // set the new length of paremeters
+  // set the new length of parameters
   aParams->length( j );
 
   // fill the parameters
diff --git a/src/SKETCHER/Sketcher_Profile.cxx b/src/SKETCHER/Sketcher_Profile.cxx
index fdb7d5bb8..14da33077 100644
--- a/src/SKETCHER/Sketcher_Profile.cxx
+++ b/src/SKETCHER/Sketcher_Profile.cxx
@@ -594,8 +594,8 @@ void Sketcher_Profile::ShapeFunctor::addSegmentAbsolute( const TCollection_Ascii
 
 /*!
   \brief Add segment by relativ coordinates
-  \param dx dX value specifing segment end
-  \param dy dY value specifing segment end
+  \param dx dX value specifying segment end
+  \param dy dY value specifying segment end
   \internal
 */
 void Sketcher_Profile::ShapeFunctor::addSegmentRelative( const TCollection_AsciiString& dx,
@@ -801,8 +801,8 @@ void Sketcher_Profile::ShapeFunctor::addArcAbsolute( const TCollection_AsciiStri
 
 /*!
   \brief Add arc along current direction vector by specified relative coordinates
-  \param dx dX value specifing arc end
-  \param dy dY value specifing arc end
+  \param dx dX value specifying arc end
+  \param dy dY value specifying arc end
   \internal
 */
 void Sketcher_Profile::ShapeFunctor::addArcRelative( const TCollection_AsciiString& dx,
@@ -867,8 +867,8 @@ void Sketcher_Profile::ShapeFunctor::addArcRadiusAbsolute( const TCollection_Asc
 
 /*!
   \brief Add arc with given radius by specified relative coordinates
-  \param dx dX value specifing arc end
-  \param dy dY value specifing arc end
+  \param dx dX value specifying arc end
+  \param dy dY value specifying arc end
   \param radius arc radius
   \param flag reverse direction flag
   \internal
@@ -958,8 +958,8 @@ void Sketcher_Profile::ShapeFunctor::addArcCenterAbsolute( const TCollection_Asc
 
 /*!
   \brief Add arc with given center by specified relative coordinates
-  \param dx dX value specifing arc end
-  \param dy dY value specifing arc end
+  \param dx dX value specifying arc end
+  \param dy dY value specifying arc end
   \param xc X coordinate of arc center
   \param yc Y coordinate of arc center
   \param flag1 reverse direction flag
@@ -1351,8 +1351,8 @@ void Sketcher_Profile::DumpFunctor::addSegmentAbsolute( const TCollection_AsciiS
 
 /*!
   \brief Add segment by relativ coordinates
-  \param dx dX value specifing segment end
-  \param dy dY value specifing segment end
+  \param dx dX value specifying segment end
+  \param dy dY value specifying segment end
   \internal
 */
 void Sketcher_Profile::DumpFunctor::addSegmentRelative( const TCollection_AsciiString& dx,
@@ -1531,8 +1531,8 @@ void Sketcher_Profile::DumpFunctor::addArcAbsolute( const TCollection_AsciiStrin
 
 /*!
   \brief Add arc along current direction vector by specified relative coordinates
-  \param dx dX value specifing arc end
-  \param dy dY value specifing arc end
+  \param dx dX value specifying arc end
+  \param dy dY value specifying arc end
   \internal
 */
 void Sketcher_Profile::DumpFunctor::addArcRelative( const TCollection_AsciiString& dx,
@@ -1561,8 +1561,8 @@ void Sketcher_Profile::DumpFunctor::addArcRadiusAbsolute( const TCollection_Asci
 
 /*!
   \brief Add arc with given radius by specified relative coordinates
-  \param dx dX value specifing arc end
-  \param dy dY value specifing arc end
+  \param dx dX value specifying arc end
+  \param dy dY value specifying arc end
   \param radius arc radius
   \param flag reverse direction flag
   \internal
@@ -1599,8 +1599,8 @@ void Sketcher_Profile::DumpFunctor::addArcCenterAbsolute( const TCollection_Asci
 
 /*!
   \brief Add arc with given center by specified relative coordinates
-  \param dx dX value specifing arc end
-  \param dy dY value specifing arc end
+  \param dx dX value specifying arc end
+  \param dy dY value specifying arc end
   \param xc X coordinate of arc center
   \param yc Y coordinate of arc center
   \param flag1 reverse direction flag
diff --git a/src/ShHealOper/ShHealOper_EdgeDivide.cxx b/src/ShHealOper/ShHealOper_EdgeDivide.cxx
index 869be89b9..c0aba1164 100644
--- a/src/ShHealOper/ShHealOper_EdgeDivide.cxx
+++ b/src/ShHealOper/ShHealOper_EdgeDivide.cxx
@@ -261,7 +261,7 @@ Standard_Boolean ShHealOper_EdgeDivide::computeValues(const Handle(TColStd_HSequ
   
   Standard_Real aFirst =0.,aLast=0.;
 
-  //computation of the split values if edge should be splitted by parameter.
+  //computation of the split values if edge should be split by parameter.
   if(myDivideParamMode) {
     BRep_Tool::Range(myEdge,aFirst,aLast);
     Handle(Geom_Curve) aCurve = BRep_Tool::Curve(myEdge,aFirst,aLast);
@@ -275,7 +275,7 @@ Standard_Boolean ShHealOper_EdgeDivide::computeValues(const Handle(TColStd_HSequ
     }
   }
   else {
-     //computation of the split values if edge should be splitted by length.
+     //computation of the split values if edge should be split by length.
     ShapeAnalysis_Edge sae;
     Handle(Geom_Curve) aCurve;
     Standard_Real aCurLen =0.;
diff --git a/src/ShHealOper/ShHealOper_EdgeDivide.hxx b/src/ShHealOper/ShHealOper_EdgeDivide.hxx
index 1a9eebb7d..2302ba8e5 100644
--- a/src/ShHealOper/ShHealOper_EdgeDivide.hxx
+++ b/src/ShHealOper/ShHealOper_EdgeDivide.hxx
@@ -56,7 +56,7 @@ class ShHealOper_EdgeDivide : public ShHealOper_Tool
                                            const Standard_Boolean theDivideParamMode = Standard_True);
   //Performs spitting of the specified edge in the accoradnce to
   //specified mode and value.
-  //If theDivideParamMode is equal to true edge will be splitted by parameter.
+  //If theDivideParamMode is equal to true edge will be split by parameter.
   //Else edge will be spliited by length (default true).
   //theValue is coefficient for splitting from 0 to 1.
 
diff --git a/src/ShHealOper/ShHealOper_ShapeProcess.hxx b/src/ShHealOper/ShHealOper_ShapeProcess.hxx
index f52271dc8..b1e5c1aa5 100644
--- a/src/ShHealOper/ShHealOper_ShapeProcess.hxx
+++ b/src/ShHealOper/ShHealOper_ShapeProcess.hxx
@@ -47,7 +47,7 @@ class ShHealOper_ShapeProcess : public ShHealOper_Tool
 
   /// Empty constructor
   Standard_EXPORT ShHealOper_ShapeProcess();
-  //Constuctor initializes by defaults parameters 
+  //Constructor initializes by defaults parameters 
   // (name of resource file - ShHealing, prefix - ShapeProcess, 
   // SaveHistory = Standard_False, level = TopAbs_FACE)
 
@@ -55,7 +55,7 @@ class ShHealOper_ShapeProcess : public ShHealOper_Tool
   Standard_EXPORT ShHealOper_ShapeProcess 
     (const TCollection_AsciiString& theNameResource,
      const TCollection_AsciiString& thePrefix = "ShapeProcess");
-  //Constuctor initializes by specified name of resource file and prefix
+  //Constructor initializes by specified name of resource file and prefix
   
   Standard_EXPORT void Perform(const TopoDS_Shape& theOldShape, 
                                            TopoDS_Shape& theNewShape);