diff --git a/Combinatorial_map/include/CGAL/Combinatorial_map.h b/Combinatorial_map/include/CGAL/Combinatorial_map.h
index 12a98e7eb5d..42b64358d00 100644
--- a/Combinatorial_map/include/CGAL/Combinatorial_map.h
+++ b/Combinatorial_map/include/CGAL/Combinatorial_map.h
@@ -208,7 +208,7 @@ namespace CGAL {
 
       CGAL_assertion(number_of_darts()==0);
     }
-    
+
     /** Copy the given combinatorial map 'amap' into *this.
      *  Note that both CMap can have different dimensions and/or non void attributes.
      *  Here CMap2 is necessarily non const; while Dart_handle_2 can be a const or non const handle.
@@ -257,7 +257,7 @@ namespace CGAL {
       // Create an mapping between darts of the two maps (originals->copies).
       // (here we cannot use CGAL::Unique_hash_map because it does not provide
       // iterators...
-      boost::unordered_map<Dart_handle_2, Dart_handle> local_dartmap; 
+      boost::unordered_map<Dart_handle_2, Dart_handle> local_dartmap;
       if (origin_to_copy==NULL) // Use local_dartmap if user does not provides its own unordered_map
       { origin_to_copy=&local_dartmap; }
 
@@ -272,10 +272,10 @@ namespace CGAL {
 
           if (mark_perforated!=NB_MARKS && amap.is_perforated(it))
           { mark(new_dart, mark_perforated); }
-          
+
           (*origin_to_copy)[it]=new_dart;
           if (copy_to_origin!=NULL) { (*copy_to_origin)[new_dart]=it; }
-          
+
           internal::Copy_dart_info_functor
             <typename CMap2::Refs, Refs, DartInfoConverter>::run
             (static_cast<typename CMap2::Refs&>(amap), static_cast<Refs&>(*this),
@@ -395,7 +395,7 @@ namespace CGAL {
            converters, dartinfoconverter, pointconverter,
            copy_perforated_darts, mark_perforated);
     }
-    
+
     // (3a) copy(amap, converters)
     template<typename CMap2, typename Converters>
     void copy(CMap2& amap,
@@ -427,7 +427,7 @@ namespace CGAL {
       copy(amap, origin_to_copy, copy_to_origin, converters, dartinfoconverter,
            copy_perforated_darts, mark_perforated);
     }
-    
+
     // (4a) copy(amap)
     template<typename CMap2>
     void copy(CMap2& amap,
@@ -567,7 +567,7 @@ namespace CGAL {
       // iterators...
       boost::unordered_map
         <typename boost::graph_traits<HEG>::halfedge_descriptor,
-         Dart_handle> local_dartmap; 
+         Dart_handle> local_dartmap;
       if (origin_to_copy==NULL) // Used local_dartmap if user does not provides its own unordered_map
       { origin_to_copy=&local_dartmap; }
 
@@ -582,7 +582,7 @@ namespace CGAL {
 
           if (mark_perforated!=NB_MARKS && CGAL::is_border(*it, heg))
           { mark(new_dart, mark_perforated); }
-          
+
           (*origin_to_copy)[*it]=new_dart;
           if (copy_to_origin!=NULL) { (*copy_to_origin)[new_dart]=*it; }
         }
@@ -597,7 +597,7 @@ namespace CGAL {
         basic_link_beta(dartmap_iter->second,
                         (*origin_to_copy)[CM_ADL_next(dartmap_iter->first, heg)],
             1);
-        
+
         if (!CGAL::is_border(CM_ADL_opposite(dartmap_iter->first, heg), heg) &&
             (dartmap_iter->first)<CM_ADL_opposite(dartmap_iter->first, heg))
         {
@@ -609,7 +609,7 @@ namespace CGAL {
 
       CGAL_assertion (is_valid());
     }
-    
+
     /** Clear the combinatorial map. Remove all darts and all attributes.
      *  Note that reserved marks are not free.
      */
@@ -1194,7 +1194,7 @@ namespace CGAL {
     bool belong_to_same_cell(Dart_const_handle adart1,
                              Dart_const_handle adart2) const
     { return CGAL::belong_to_same_cell<Self, i, d>(*this, adart1, adart2); }
-  
+
     template <unsigned int i, unsigned int d=dimension>
     bool is_whole_cell_unmarked(Dart_const_handle adart, size_type amark) const
     { return CGAL::is_whole_cell_unmarked<Self, i, d>(*this, adart, amark); }
@@ -2726,16 +2726,16 @@ namespace CGAL {
       CGAL_assertion((!this->template is_free<1>(d1)));
       /* CGAL_assertion((belong_to_same_cell<0>(this->template beta<1>(d1),
                                                 d2))); */
-      
+
       if (d2==beta<2>(d1)) { return 0; }
-      
+
       Dart_const_handle dd1=d1;
       std::size_t res=1;
       while (beta<1>(dd1)!=d2)
       {
         if (this->template is_free<2>(beta<1>(dd1)))
         { return std::numeric_limits<std::size_t>::max(); }
-        
+
         ++res;
         dd1=beta<1, 2>(dd1);
 
@@ -2752,7 +2752,7 @@ namespace CGAL {
       CGAL_assertion((!this->template is_free<1>(d1)));
       /* CGAL_assertion((belong_to_same_cell<0>(this->template beta<1>(d1),
                                                 d2))); */
-      
+
       if (d2==beta<2>(d1)) { return 0; }
 
       if (this->template is_free<2>(d1) || this->template is_free<2>(d2))
@@ -2766,10 +2766,10 @@ namespace CGAL {
       {
         if (this->template is_free<2>(beta<0>(dd1)))
         { return std::numeric_limits<std::size_t>::max(); }
-        
+
         ++res;
         dd1=beta<0, 2>(dd1);
-        
+
         CGAL_assertion(!this->template is_free<0>(dd1));
         CGAL_assertion(beta<0>(dd1)==d2 || dd1!=d1);
       }
@@ -3444,7 +3444,7 @@ namespace CGAL {
 #if defined(CGAL_CMAP_DART_DEPRECATED) && !defined(CGAL_NO_DEPRECATED_CODE)
       CGAL_USE(testDartInfo);
 #endif
-      
+
       typedef Combinatorial_map_base<d2,Refs2,Items2,Alloc2, Storage2> Map2;
 
       bool match = true;
@@ -4813,6 +4813,6 @@ namespace CGAL {
 #endif
 
  #include <CGAL/enable_warnings.h>
- 
+
 #endif // CGAL_COMBINATORIAL_MAP_H //
 // EOF //
diff --git a/Combinatorial_map/include/CGAL/Face_graph_wrapper.h b/Combinatorial_map/include/CGAL/Face_graph_wrapper.h
index bd4cb728a23..e7cd8b87706 100644
--- a/Combinatorial_map/include/CGAL/Face_graph_wrapper.h
+++ b/Combinatorial_map/include/CGAL/Face_graph_wrapper.h
@@ -46,7 +46,7 @@ public:
     // typedef My_halfedge_iterator<HEG> iterator;
     // typedef My_halfedge_iterator<HEG> const_iterator; // TODO ?
   };
-  
+
   typedef typename boost::graph_traits<HEG>::halfedge_descriptor Dart_handle;
   typedef typename boost::graph_traits<HEG>::halfedge_descriptor Dart_const_handle;
 
@@ -67,7 +67,7 @@ public:
   typedef typename boost::graph_traits<HEG>::edge_descriptor   edge_descriptor;
   typedef typename boost::graph_traits<HEG>::face_descriptor   face_descriptor;
   typedef boost::undirected_tag                                directed_category;
-  typedef boost::disallow_parallel_edge_tag                    edge_parallel_category; 
+  typedef boost::disallow_parallel_edge_tag                    edge_parallel_category;
 
   struct SM_graph_traversal_category : public virtual boost::bidirectional_graph_tag,
                                        public virtual boost::vertex_list_graph_tag,
@@ -75,7 +75,7 @@ public:
   {};
   typedef SM_graph_traversal_category traversal_category;
 
-  
+
   Face_graph_wrapper(const HEG& f) : m_fg(f),
                                      mdarts(*this),
                                      m_nb_darts(0),
@@ -111,7 +111,7 @@ public:
 
   const HEG& get_fg() const
   { return m_fg; }
-  
+
   template<unsigned int i>
   bool is_free(Dart_const_handle /* dh */) const
   { return false; } // Not possible to have a free dart with an HEG.
@@ -125,7 +125,7 @@ public:
   {
     CGAL_assertion(B1>=0 && B1<=static_cast<int>(dimension));
     if (B1==1) return Get_beta<HEG, 1>::value(m_fg, ADart);
-    if (B1==2) return Get_beta<HEG, 2>::value(m_fg, ADart); 
+    if (B1==2) return Get_beta<HEG, 2>::value(m_fg, ADart);
     return Get_beta<HEG, 0>::value(m_fg, ADart);
   }
   template<int B1>
@@ -137,15 +137,15 @@ public:
 
   bool is_empty() const
   { return number_of_darts()==0; }
-  
+
   /* ??  bool is_dart_used(Dart_const_handle dh) const
       { return true; ?? } */
-  
+
   int highest_nonfree_dimension(Dart_const_handle /* dh */) const
   { return 2; }
 
   Dart_const_handle previous(Dart_const_handle ADart) const
-  { return get_beta<0>(ADart); }  
+  { return get_beta<0>(ADart); }
   Dart_const_handle next(Dart_const_handle ADart) const
   { return get_beta<1>(ADart); }
   Dart_const_handle opposite(Dart_const_handle dh) const
@@ -159,7 +159,7 @@ public:
   Dart_const_handle opposite(Dart_const_handle ADart) const
   { return this->template get_beta<dim>(ADart); }
   Dart_const_handle other_orientation(Dart_const_handle ADart) const
-  { return ADart; }  
+  { return ADart; }
 
   bool is_previous_exist(Dart_const_handle) const
   { return true; }
@@ -185,10 +185,10 @@ public:
   Dart_const_handle beta(Dart_const_handle ADart) const
   { return CGAL::internal::Beta_functor_static<const Self, Dart_const_handle, Betas...>::
       run(*this, ADart); }
-  
+
   size_type number_of_darts() const
   { return m_nb_darts; }
-  
+
   size_type number_of_halfedges() const
   { return number_of_darts(); }
 
@@ -200,26 +200,26 @@ public:
     CGAL_assertion(amark<NB_MARKS);
     return (m_marks_initialized && mnb_times_reserved_marks[amark]!=0);
   }
-  
+
   size_type number_of_marked_darts(size_type amark) const
   {
     CGAL_assertion( is_reserved(amark) );
     return mnb_marked_darts[amark];
   }
-  
+
   size_type number_of_unmarked_darts(size_type amark) const
   {
     return number_of_darts() - number_of_marked_darts(amark);
   }
-  
+
   bool is_whole_map_unmarked(size_type amark) const
   { return number_of_marked_darts(amark)==0; }
-  
+
   bool is_whole_map_marked(size_type amark) const
   {  return number_of_marked_darts(amark)==number_of_darts(); }
 
   class Exception_no_more_available_mark {};
-  
+
   size_type get_new_mark() const
   {
     initialize_marks();
@@ -230,19 +230,19 @@ public:
       std::cerr << "  (exception launched)" << std::endl;
       throw Exception_no_more_available_mark();
     }
-    
+
     size_type m=mfree_marks_stack[mnb_used_marks];
     mused_marks_stack[mnb_used_marks]=m;
-    
+
     mindex_marks[m]=mnb_used_marks;
     mnb_times_reserved_marks[m]=1;
-    
+
     ++mnb_used_marks;
     CGAL_assertion(is_whole_map_unmarked(m));
 
     return m;
   }
-  
+
   void share_a_mark(size_type amark) const
   {
     CGAL_assertion( is_reserved(amark) );
@@ -258,14 +258,14 @@ public:
   void negate_mark(size_type amark) const
   {
     CGAL_assertion(is_reserved(amark));
-    
+
     mnb_marked_darts[amark]=number_of_darts()-mnb_marked_darts[amark];
     mmask_marks.flip(amark);
   }
 
   void mark_null_dart( size_type /*amark*/) const
   {}
-  
+
   bool get_dart_mark(Dart_const_handle ADart, size_type amark) const
   {
     CGAL_assertion(is_reserved(amark));
@@ -290,41 +290,41 @@ public:
                    bool astate) const
   {
     CGAL_assertion(is_reserved(amark));
-    
+
     if (is_marked(adart, amark)!=astate)
     {
       if (astate) ++mnb_marked_darts[amark];
       else --mnb_marked_darts[amark];
-      
+
       flip_dart_mark(adart, amark);
     }
   }
-  
+
   void mark(Dart_const_handle adart, size_type amark) const
   {
     CGAL_assertion(is_reserved(amark));
-    
+
     if (is_marked(adart, amark)) return;
-    
+
     ++mnb_marked_darts[amark];
     flip_dart_mark(adart, amark);
   }
-  
+
   void unmark(Dart_const_handle adart, size_type amark) const
   {
     CGAL_assertion( adart!=this->null_dart_handle );
     CGAL_assertion( is_reserved(amark) );
-    
+
     if (!is_marked(adart, amark)) return;
-    
+
     --mnb_marked_darts[amark];
     flip_dart_mark(adart, amark);
   }
-  
+
   void unmark_all(size_type amark) const
   {
     CGAL_assertion( is_reserved(amark) );
-    
+
     if ( is_whole_map_marked(amark) )
     {
       negate_mark(amark);
@@ -337,44 +337,44 @@ public:
     }
     CGAL_assertion(is_whole_map_unmarked(amark));
   }
-  
+
   void free_mark(size_type amark) const
   {
     CGAL_assertion( is_reserved(amark) );
-    
+
     if ( mnb_times_reserved_marks[amark]>1 )
     {
       --mnb_times_reserved_marks[amark];
       return;
     }
-    
+
     unmark_all(amark);
-    
+
     // 1) We remove amark from the array mused_marks_stack by
     //    replacing it with the last mark in this array.
     mused_marks_stack[mindex_marks[amark]] =
       mused_marks_stack[--mnb_used_marks];
     mindex_marks[mused_marks_stack[mnb_used_marks]] =
       mindex_marks[amark];
-    
+
     // 2) We add amark in the array mfree_marks_stack and update its index.
     mfree_marks_stack[ mnb_used_marks ]=amark;
     mindex_marks[amark] = mnb_used_marks;
-    
+
     mnb_times_reserved_marks[amark]=0;
   }
-  
+
   bool is_without_boundary(unsigned int i) const
   {
     CGAL_assertion(1<=i && i<=dimension);
     if (i==1) return true;
-    
+
     for ( typename Dart_range::const_iterator it(darts().begin()),
             itend(darts().end()); it!=itend; ++it)
     { if (is_perforated(it)) return false; }
     return true;
   }
-  
+
   bool is_without_boundary() const
   { return is_without_boundary(2); }
 
@@ -400,7 +400,7 @@ public:
       }
       return msize;
     }
-    
+
     bool empty() const
     { return mmap.is_empty(); }
   private:
@@ -477,7 +477,7 @@ public:
       }
       return msize;
     }
-    
+
     bool empty() const
     { return mmap.is_empty(); }
   private:
@@ -527,7 +527,7 @@ public:
     { if (*it==adart2) { return true; } }
     return false;
   }
-  
+
   template <unsigned int i>
   bool is_whole_cell_unmarked(Dart_const_handle adart, size_type amark) const
   {
@@ -562,7 +562,7 @@ public:
     else if (i==1) { return mark_cell<1>(adart, amark); }
     else if (i==2) { return mark_cell<2>(adart, amark); }
     return mark_cell<3>(adart, amark);
-  } 
+  }
 
   template <unsigned int i>
   size_type unmark_cell(Dart_const_handle adart, size_type amark) const
@@ -586,7 +586,7 @@ public:
       res[i]=0;
       marks[i]=INVALID_MARK;
     }
-    
+
     // Mark reservation
     for (unsigned int i=0; i<acells.size(); ++i)
     {
@@ -650,22 +650,22 @@ public:
     std::vector<unsigned int> res;
     size_type m=get_new_mark();
     negate_mark(m); // We mark all the cells.
-    
+
     res=count_marked_cells(m, acells);
-    
+
     negate_mark(m); // We unmark the cells
     free_mark(m);
-    
+
     return res;
   }
 
   std::vector<unsigned int> count_all_cells() const
   {
     std::vector<unsigned int> dim(dimension+2);
-    
+
     for ( unsigned int i=0; i<=dimension+1; ++i)
     { dim[i]=i; }
-    
+
     return count_cells(dim);
   }
 
@@ -674,9 +674,9 @@ public:
     std::vector<unsigned int> cells(dimension+2);
     for ( unsigned int i=0; i<=dimension+1; ++i)
     { cells[i]=i; }
-    
+
     std::vector<unsigned int> res=count_cells(cells);
-    
+
     os<<"#Darts="<<number_of_darts();
     for (unsigned int i=0; i<=dimension; ++i)
       os<<", #"<<i<<"-cells="<<res[i];
@@ -690,25 +690,25 @@ protected:
   Dart_range mdarts;
   std::size_t m_nb_darts;
   mutable bool m_marks_initialized; /// True iff marks are initialized (we use lazy initialization)
-  
+
   /// Number of times each mark is reserved. 0 if the mark is free.
   mutable size_type mnb_times_reserved_marks[NB_MARKS];
-  
+
   /// Mask marks to know the value of unmark dart, for each index i.
   mutable std::bitset<NB_MARKS> mmask_marks;
-  
+
   /// Number of used marks.
   mutable size_type mnb_used_marks;
-  
+
   /// Index of each mark, in mfree_marks_stack or in mfree_marks_stack.
   mutable size_type mindex_marks[NB_MARKS];
-  
+
   /// "Stack" of free marks.
   mutable size_type mfree_marks_stack[NB_MARKS];
-  
+
   /// "Stack" of used marks.
   mutable size_type mused_marks_stack[NB_MARKS];
-  
+
   /// Number of marked darts for each used marks.
   mutable size_type mnb_marked_darts[NB_MARKS];
 
diff --git a/Generalized_map/include/CGAL/Generalized_map.h b/Generalized_map/include/CGAL/Generalized_map.h
index fd42d6262e4..d0372975c43 100644
--- a/Generalized_map/include/CGAL/Generalized_map.h
+++ b/Generalized_map/include/CGAL/Generalized_map.h
@@ -191,7 +191,7 @@ namespace CGAL {
      *  @post *this is valid.
      */
     template <typename GMap2, typename Dart_handle_2,
-              typename Converters, typename DartInfoConverter, 
+              typename Converters, typename DartInfoConverter,
               typename PointConverter>
     void generic_copy(GMap2& amap,
                       boost::unordered_map<Dart_handle_2, Dart_handle>* origin_to_copy,
@@ -239,14 +239,14 @@ namespace CGAL {
 
           (*origin_to_copy)[it]=new_dart;
           if (copy_to_origin!=NULL) { (*copy_to_origin)[new_dart]=it; }
-          
+
           internal::Copy_dart_info_functor
             <typename GMap2::Refs, Refs, DartInfoConverter>::run
             (static_cast<const typename GMap2::Refs&>(amap), static_cast<Refs&>(*this),
              it, new_dart, dartinfoconverter);
         }
       }
-      
+
       unsigned int min_dim=(dimension<amap.dimension?dimension:amap.dimension);
 
       typename boost::unordered_map<Dart_handle_2, Dart_handle>::iterator
@@ -359,7 +359,7 @@ namespace CGAL {
            dartinfoconverter, pointconverter,
            copy_perforated_darts, mark_perforated);
     }
-    
+
     // (3a) copy(amap, converters)
     template<typename GMap2, typename Converters>
     void copy(GMap2& amap,
@@ -391,7 +391,7 @@ namespace CGAL {
       copy(amap, origin_to_copy, copy_to_origin, converters, dartinfoconverter,
            copy_perforated_darts, mark_perforated);
     }
-    
+
     // (4a) copy(amap)
     template<typename GMap2>
     void copy(GMap2& amap,
@@ -420,7 +420,7 @@ namespace CGAL {
       CGAL::cpp11::tuple<> converters;
       copy(amap, origin_to_copy, copy_to_origin, converters,
            copy_perforated_darts, mark_perforated);
-    }    
+    }
 
     // Copy constructor from a map having exactly the same type.
     Generalized_map_base (const Self & amap) : Generalized_map_base()
@@ -1018,7 +1018,7 @@ namespace CGAL {
     bool belong_to_same_cell(Dart_const_handle adart1,
                              Dart_const_handle adart2) const
     { return CGAL::belong_to_same_cell<Self, i, d>(*this, adart1, adart2); }
-  
+
     template <unsigned int i, unsigned int d=dimension>
     bool is_whole_cell_unmarked(Dart_const_handle adart, size_type amark) const
     { return CGAL::is_whole_cell_unmarked<Self, i, d>(*this, adart, amark); }
@@ -1839,16 +1839,16 @@ namespace CGAL {
     {
       CGAL_assertion((!this->template is_free<1>(d1)));
       /* CGAL_assertion((belong_to_same_cell<0>(this->next(d1), d2))); */
-      
+
       if (d2==opposite2(d1)) { return 0; }
-      
+
       Dart_const_handle dd1=d1;
       std::size_t res=1;
       while (next(dd1)!=d2)
       {
         if (this->template is_free<2>(next(dd1)))
         { return std::numeric_limits<std::size_t>::max(); }
-        
+
         ++res;
         dd1=opposite2(next(dd1));
 
@@ -1881,7 +1881,7 @@ namespace CGAL {
 
         ++res;
         dd1=opposite2(previous(dd1));
-        
+
         CGAL_assertion(!this->template is_free<0>(dd1));
         CGAL_assertion(previous(dd1)==d2 || dd1!=d1);
       }
diff --git a/Linear_cell_complex/include/CGAL/draw_linear_cell_complex.h b/Linear_cell_complex/include/CGAL/draw_linear_cell_complex.h
index 7cbfd171fa0..45607a07236 100644
--- a/Linear_cell_complex/include/CGAL/draw_linear_cell_complex.h
+++ b/Linear_cell_complex/include/CGAL/draw_linear_cell_complex.h
@@ -21,7 +21,7 @@
 
 namespace CGAL
 {
-  
+
 // Default color functor; user can change it to have its own face color
 struct DefaultDrawingFunctorLCC
 {
@@ -146,7 +146,7 @@ struct LCC_geom_utils<LCC, Local_kernel, 2>
   }
 };
 
-// Viewer class for LCC 
+// Viewer class for LCC
 template<class LCC, class DrawingFunctorLCC>
 class SimpleLCCViewerQt : public Basic_viewer_qt
 {
@@ -155,7 +155,7 @@ class SimpleLCCViewerQt : public Basic_viewer_qt
   typedef typename LCC::Traits Kernel;
   typedef typename Kernel::Point Point;
   typedef typename Kernel::Vector Vector;
-  
+
 public:
   /// Construct the viewer.
   /// @param alcc the lcc to view
@@ -168,7 +168,7 @@ public:
                     bool anofaces=false,
                     const DrawingFunctorLCC& drawing_functor=DrawingFunctorLCC()) :
     // First draw: vertices; edges, faces; multi-color; inverse normal
-    Base(parent, title, true, true, true, false, false), 
+    Base(parent, title, true, true, true, false, false),
     lcc(alcc),
     m_nofaces(anofaces),
     m_random_face_color(false),
@@ -184,7 +184,7 @@ protected:
     compute_elements();
     if (doredraw) { redraw(); }
   }
-  
+
   void compute_face(Dart_const_handle dh, Dart_const_handle voldh)
   {
     if (m_nofaces || !m_drawing_functor.draw_face(*lcc, dh)) return;
@@ -204,7 +204,7 @@ protected:
     {
       CGAL::Random random((unsigned int)(lcc->darts().index(dh)));
       CGAL::Color c=get_random_color(random);
-      face_begin(c);      
+      face_begin(c);
     }
     else if (m_drawing_functor.colored_face(*lcc, dh))
     {
@@ -260,7 +260,7 @@ protected:
   {
     clear();
     if (lcc==nullptr) return;
-    
+
     typename LCC::size_type markvolumes  = lcc->get_new_mark();
     typename LCC::size_type markfaces    = lcc->get_new_mark();
     typename LCC::size_type markedges    = lcc->get_new_mark();
@@ -331,13 +331,13 @@ protected:
     lcc->free_mark(markedges);
     lcc->free_mark(markvertices);
   }
-  
+
   virtual void init()
   {
     Base::init();
     setKeyDescription(::Qt::Key_C, "Toggles random face colors");
   }
-  
+
   virtual void keyPressEvent(QKeyEvent *e)
   {
     const ::Qt::KeyboardModifiers modifiers = e->modifiers();
@@ -350,7 +350,7 @@ protected:
     }
     else
     { Base::keyPressEvent(e); } // Call the base method to process others/classicals key
-    
+
     // Call: * compute_elements() if the model changed, followed by
     //       * redraw() if some viewing parameters changed that implies some
     //                  modifications of the buffers
@@ -388,7 +388,7 @@ void draw(const CGAL_LCC_TYPE& alcc,
 #else
   bool cgal_test_suite=qEnvironmentVariableIsSet("CGAL_TEST_SUITE");
 #endif
-  
+
   if (!cgal_test_suite)
   {
     int argc=1;