diff --git a/src/GEOMBase/GEOMBase_Helper.cxx b/src/GEOMBase/GEOMBase_Helper.cxx
index ba5260209..af3ffd8d5 100755
--- a/src/GEOMBase/GEOMBase_Helper.cxx
+++ b/src/GEOMBase/GEOMBase_Helper.cxx
@@ -1205,7 +1205,7 @@ GEOM::GEOM_Object_ptr GEOMBase_Helper::findObjectInFather( GEOM::GEOM_Object_ptr
 //================================================================
 void GEOMBase_Helper::addSubshapesToStudy()
 {
-  //Impemented in Dialogs, called from Accept method
+  //Implemented in Dialogs, called from Accept method
 }
 
 //================================================================
@@ -1214,7 +1214,7 @@ void GEOMBase_Helper::addSubshapesToStudy()
 //================================================================
 QList<GEOM::GeomObjPtr> GEOMBase_Helper::getSourceObjects()
 {
-  //Impemented in Dialogs, called from Accept method
+  //Implemented in Dialogs, called from Accept method
   QList<GEOM::GeomObjPtr> res;
   return res;
 }
diff --git a/src/STEPPlugin/STEPPlugin_ImportDriver.cxx b/src/STEPPlugin/STEPPlugin_ImportDriver.cxx
index 2fcb37f8e..ff3505282 100644
--- a/src/STEPPlugin/STEPPlugin_ImportDriver.cxx
+++ b/src/STEPPlugin/STEPPlugin_ImportDriver.cxx
@@ -78,69 +78,69 @@ namespace
    *  GetShape()
    */
   //=============================================================================
-  
+
   TopoDS_Shape GetShape(const Handle(Standard_Transient)        &theEnti,
                         const Handle(Transfer_TransientProcess) &theTP)
   {
     TopoDS_Shape            aResult;
     Handle(Transfer_Binder) aBinder = theTP->Find(theEnti);
-    
+
     if (aBinder.IsNull()) {
       return aResult;
     }
-    
+
     aResult = TransferBRep::ShapeResult(aBinder);
-    
+
     return aResult;
   }
-  
+
   //=============================================================================
   /*!
    *  GetLabel()
    */
   //=============================================================================
-  
+
   TDF_Label GetLabel(const Handle(Standard_Transient) &theEnti,
                      const TDF_Label                  &theShapeLabel,
                      const TopoDS_Shape               &aShape)
   {
     TDF_Label aResult;
-    
+
     if (theEnti->IsKind
         (STANDARD_TYPE(StepGeom_GeometricRepresentationItem))) {
       // check all named shapes using iterator
       TDF_ChildIDIterator anIt
         (theShapeLabel, TDataStd_Name::GetID(), Standard_True);
-      
+
       for (; anIt.More(); anIt.Next()) {
         Handle(TDataStd_Name) nameAttr =
           Handle(TDataStd_Name)::DownCast(anIt.Value());
-        
+
         if (nameAttr.IsNull()) {
           continue;
         }
-        
+
         TDF_Label aLab = nameAttr->Label();
         Handle(TNaming_NamedShape) shAttr;
-        
+
         if (aLab.FindAttribute(TNaming_NamedShape::GetID(), shAttr) &&
             shAttr->Get().IsEqual(aShape)) {
           aResult = aLab;
         }
       }
     }
-    
+
     // create label and set shape
     if (aResult.IsNull()) {
       TDF_TagSource aTag;
-      
+
       aResult = aTag.NewChild(theShapeLabel);
-      
+
       TNaming_Builder tnBuild (aResult);
-      
+
       tnBuild.Generated(aShape);
     }
-    
+
     return aResult;
   }
 
@@ -235,7 +235,7 @@ namespace
         }
       }
 
-      // Set the result shape orienation.
+      // Set the result shape orientation.
       aResult.Orientation(theShape.Orientation());
       theMapModified.Bind(theShape, aResult);
     } else {
@@ -323,7 +323,7 @@ namespace
    *  StoreName()
    */
   //=============================================================================
-  
+
   void StoreName(const Handle(Standard_Transient)        &theEnti,
                  const TopTools_IndexedMapOfShape        &theIndices,
                  const Handle(XSControl_WorkSession)     &theWS,
@@ -332,18 +332,18 @@ namespace
                        TopTools_DataMapOfShapeShape      &theMapShapeAssembly)
   {
     Handle(TCollection_HAsciiString) aName;
-    
+
     if (theEnti->IsKind(STANDARD_TYPE(StepShape_TopologicalRepresentationItem)) ||
         theEnti->IsKind(STANDARD_TYPE(StepGeom_GeometricRepresentationItem))) {
       aName = Handle(StepRepr_RepresentationItem)::DownCast(theEnti)->Name();
     } else if (theEnti->IsKind(STANDARD_TYPE(StepRepr_NextAssemblyUsageOccurrence))) {
-      Handle(StepRepr_NextAssemblyUsageOccurrence) aNAUO = 
+      Handle(StepRepr_NextAssemblyUsageOccurrence) aNAUO =
         Handle(StepRepr_NextAssemblyUsageOccurrence)::DownCast(theEnti);
 
       Interface_EntityIterator aSubs = theWS->Graph().Sharings(aNAUO);
 
       for (aSubs.Start(); aSubs.More(); aSubs.Next()) {
-        Handle(StepRepr_ProductDefinitionShape) aPDS = 
+        Handle(StepRepr_ProductDefinitionShape) aPDS =
           Handle(StepRepr_ProductDefinitionShape)::DownCast(aSubs.Value());
 
         if(aPDS.IsNull()) {
@@ -368,13 +368,13 @@ namespace
     } else {
       Handle(StepBasic_ProductDefinition) PD =
         Handle(StepBasic_ProductDefinition)::DownCast(theEnti);
-      
+
       if (PD.IsNull() == Standard_False) {
         Handle(StepBasic_Product) Prod = PD->Formation()->OfProduct();
         aName = Prod->Name();
       }
     }
-    
+
     bool isValidName = false;
 
     if (aName.IsNull() == Standard_False) {
@@ -565,7 +565,7 @@ namespace
       result = "M";
     else
       error = "The file contains not supported units";
-      
+
     // TODO (for other units)
     // else
     //  result = "??"
diff --git a/src/ShHealOper/ShHealOper_FillHoles.hxx b/src/ShHealOper/ShHealOper_FillHoles.hxx
index a16c63bb3..599775875 100644
--- a/src/ShHealOper/ShHealOper_FillHoles.hxx
+++ b/src/ShHealOper/ShHealOper_FillHoles.hxx
@@ -48,12 +48,12 @@ class ShHealOper_FillHoles : public ShHealOper_Tool
 
   Standard_EXPORT ShHealOper_FillHoles ();
   // Empty constructor initializes class by default parameters.
-  
+
   Standard_EXPORT ShHealOper_FillHoles (const TopoDS_Shape& theShape);
 
   Standard_EXPORT virtual void Init(const TopoDS_Shape& theShape);
   //Method for initialization by whole shape.
-  
+
   Standard_EXPORT void InitParameters(Standard_Integer theDegree = 3,//3(2)
                                  Standard_Integer theNbPtsOnCur =5,//3,
                                  Standard_Integer theNbIter = 12,//3
@@ -66,15 +66,15 @@ class ShHealOper_FillHoles : public ShHealOper_Tool
   //Initialization of the parameters for creation of the surface by GeomPlate.
 
   Standard_EXPORT Standard_Boolean Fill();
-  //Fill all holes detectected as free boundaries.
-  
+  //Fill all holes detected as free boundaries.
+
    Standard_EXPORT Standard_Boolean Fill(const TopTools_SequenceOfShape& theFillShapes);
   //Fill hole specified by wires or edges.
 
 
  private:
   // ---------- PRIVATE METHODS ----------
-  
+
   Standard_Boolean prepareWires(const TopTools_SequenceOfShape& theFillShapes,
                                 Handle(TopTools_HSequenceOfShape)& theSeqWires);
 
@@ -82,7 +82,7 @@ class ShHealOper_FillHoles : public ShHealOper_Tool
                                     Handle(TColGeom2d_HArray1OfCurve)& theCurves2d,
                                     Handle(TColStd_HArray1OfInteger)& theOrders,
                                     Handle(TColStd_HArray1OfInteger)& theSenses);
-  
+
   Standard_Boolean addFace(const Handle(Geom_Surface)& theSurf,
                            const TopoDS_Wire& theWire,
                            const Handle(TColGeom2d_HArray1OfCurve)& theCurves2d,
@@ -96,7 +96,7 @@ class ShHealOper_FillHoles : public ShHealOper_Tool
   // ---------- PRIVATE FIELDS ----------
 
   TopTools_IndexedDataMapOfShapeListOfShape myEdgeShells;
-  
+
   TopTools_IndexedDataMapOfShapeListOfShape myEdgeComps;
   TopTools_IndexedDataMapOfShapeListOfShape myEdgeFaces;
   Standard_Integer myNbPtsOnCur;