diff --git a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bounded_vertical_decomposition.cpp b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bounded_vertical_decomposition.cpp
index e961609d7ba..3f1403ecebd 100644
--- a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bounded_vertical_decomposition.cpp
+++ b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/bounded_vertical_decomposition.cpp
@@ -44,9 +44,9 @@ int main() {
 
     std::cout << "   feature above: ";
     if (CGAL::assign(hh, curr.second))
-      std::cout << '[' << hh->curve() << ']\n';
+      std::cout << '[' << hh->curve() << "]\n";
     else if (CGAL::assign(vh, curr.second))
-      std::cout << '(' << vh->point() << ')\n';
+      std::cout << '(' << vh->point() << ")\n";
     else if (CGAL::assign(fh, curr.second)) std::cout << "NONE\n";
     else std::cout << "EMPTY\n";
   }
diff --git a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/curve_history.cpp b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/curve_history.cpp
index 84b70a7f6a3..49fa78bff2b 100644
--- a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/curve_history.cpp
+++ b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/curve_history.cpp
@@ -13,11 +13,11 @@ typedef Arr_with_hist::Curve_handle                           Curve_handle;
 typedef CGAL::Arr_trapezoid_ric_point_location<Arr_with_hist> Point_location;
 
 int main() {
-  // Insert s1, s2, and s3 incrementally.
+  // Insert 3 curves incrementally.
   Arr_with_hist arr;
-  Curve_handle s1 = insert(arr, Segment(Point(0, 3), Point(4, 3)));
-  Curve_handle s2 = insert(arr, Segment(Point(3, 2), Point(3, 5)));
-  Curve_handle s3 = insert(arr, Segment(Point(2, 3), Point(5, 3)));
+  insert(arr, Segment(Point(0, 3), Point(4, 3)));
+  insert(arr, Segment(Point(3, 2), Point(3, 5)));
+  insert(arr, Segment(Point(2, 3), Point(5, 3)));
 
   // Insert three additional segments aggregately.
   Segment segs[] = {Segment(Point(2, 6), Point(7, 1)),
diff --git a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/dual_with_data.cpp b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/dual_with_data.cpp
index a4ff6115b6d..e81a00c5d58 100644
--- a/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/dual_with_data.cpp
+++ b/Arrangement_on_surface_2/examples/Arrangement_on_surface_2/dual_with_data.cpp
@@ -39,7 +39,7 @@ int main(int argc, char* argv[]) {
       // There should be vit->degree()/2 lines intersecting at the current
       // vertex. We print their primal points and their indices.
       auto circ = vit->incident_halfedges();
-      for (auto d = 0; d < vit->degree() / 2; ++d) {
+      for (size_t d = 0; d < vit->degree() / 2; ++d) {
         k = circ->curve().data();     // The index of the primal point.
         std::cout << "Point no. " << k+1 << ": (" << points[k] << "), ";
         ++circ;
diff --git a/Arrangement_on_surface_2/include/CGAL/Arr_linear_traits_2.h b/Arrangement_on_surface_2/include/CGAL/Arr_linear_traits_2.h
index 256d16b01ae..5ad1960f6b7 100644
--- a/Arrangement_on_surface_2/include/CGAL/Arr_linear_traits_2.h
+++ b/Arrangement_on_surface_2/include/CGAL/Arr_linear_traits_2.h
@@ -1030,7 +1030,7 @@ public:
   Parameter_space_in_y_2 parameter_space_in_y_2_object() const
   { return Parameter_space_in_y_2(); }
 
-  /*! A function object that compares the x-limits of arc ends on the
+  /*! A function object that compares the x-limits of line ends on the
    * boundary of the parameter space
    */
   class Compare_x_on_boundary_2 {
diff --git a/Arrangement_on_surface_2/include/CGAL/Arrangement_2/Arr_traits_adaptor_2.h b/Arrangement_on_surface_2/include/CGAL/Arrangement_2/Arr_traits_adaptor_2.h
index d5f38ee522a..110867fdff7 100644
--- a/Arrangement_on_surface_2/include/CGAL/Arrangement_2/Arr_traits_adaptor_2.h
+++ b/Arrangement_on_surface_2/include/CGAL/Arrangement_2/Arr_traits_adaptor_2.h
@@ -2052,12 +2052,14 @@ public:
       //           << "  " << cv2 << "," << cv2_to_right << "," << std::endl
       //           << "  " << p << ")" << std::endl;
 
-      auto equal = m_self->equal_2_object();
       auto min_vertex = m_self->construct_min_vertex_2_object();
       auto max_vertex = m_self->construct_max_vertex_2_object();
-      const auto q = (cv_to_right) ? min_vertex(cv) : max_vertex(cv);
-      const auto q1 = (cv1_to_right) ? min_vertex(cv1) : max_vertex(cv1);
-      const auto q2 = (cv2_to_right) ? min_vertex(cv2) : max_vertex(cv2);
+      CGAL_assertion_code
+        (auto equal = m_self->equal_2_object();
+         const auto q = (cv_to_right) ? min_vertex(cv) : max_vertex(cv);
+         const auto q1 = (cv1_to_right) ? min_vertex(cv1) : max_vertex(cv1);
+         const auto q2 = (cv2_to_right) ? min_vertex(cv2) : max_vertex(cv2);
+         )
       CGAL_assertion(equal(p, q));
       CGAL_assertion(equal(p, q1));
       CGAL_assertion(equal(p, q2));
@@ -2316,7 +2318,7 @@ public:
       auto is_on_y_identification = m_self->is_on_y_identification_2_object();
       auto cmp_y_near_bd = m_self->compare_y_near_boundary_2_object();
 
-      auto psy = ps_in_y(cv, ARR_MAX_END);
+      CGAL_assertion_code(auto psy = ps_in_y(cv, ARR_MAX_END));
       CGAL_assertion(psy == ARR_INTERIOR);
 
       auto on_y_idnt1 = is_on_y_identification(cv1);
@@ -2386,7 +2388,7 @@ public:
       auto cmp_y_near_bd = m_self->compare_y_near_boundary_2_object();
 
       // Precondition
-      auto psy = ps_in_y(cv, ARR_MIN_END);
+      CGAL_assertion_code(auto psy = ps_in_y(cv, ARR_MIN_END));
       CGAL_assertion(psy == ARR_INTERIOR);
 
       auto on_y_idnt = is_on_y_identification(cv);
@@ -2465,7 +2467,7 @@ public:
       auto cmp_y_near_bd = m_self->compare_y_near_boundary_2_object();
 
       // Precondition
-      auto psy = ps_in_y(cv, ARR_MIN_END);
+      CGAL_assertion_code(auto psy = ps_in_y(cv, ARR_MIN_END));
       CGAL_assertion(psy == ARR_INTERIOR);
 
       auto on_y_idnt = is_on_y_identification(cv);
@@ -2539,7 +2541,7 @@ public:
       auto is_on_y_identification = m_self->is_on_y_identification_2_object();
       auto cmp_y_near_bd = m_self->compare_y_near_boundary_2_object();
 
-      auto psy = ps_in_y(cv, ARR_MIN_END);
+      CGAL_assertion_code(auto psy = ps_in_y(cv, ARR_MIN_END));
       CGAL_assertion(psy == ARR_INTERIOR);
 
       auto on_y_idnt1 = is_on_y_identification(cv1);
@@ -2632,7 +2634,7 @@ public:
       auto is_on_y_identification = m_self->is_on_y_identification_2_object();
       auto cmp_y_near_bd = m_self->compare_y_near_boundary_2_object();
 
-      auto psy = ps_in_y(cv, ARR_MAX_END);
+      CGAL_assertion_code(auto psy = ps_in_y(cv, ARR_MAX_END));
       CGAL_assertion(psy == ARR_INTERIOR);
 
       auto on_y_idnt = is_on_y_identification(cv);
@@ -2658,7 +2660,7 @@ public:
 
       // psx == ARR_RIGHT_BOUNDARY)
       auto res = cmp_y_near_bd(cv, cv2, ARR_MAX_END);
-      if (res == EQUAL) cv_equal_cv2 == true;
+      if (res == EQUAL) cv_equal_cv2 = true;
       return (res == SMALLER);
     }
 
@@ -2711,7 +2713,7 @@ public:
       auto is_on_y_identification = m_self->is_on_y_identification_2_object();
       auto cmp_y_near_bd = m_self->compare_y_near_boundary_2_object();
 
-      auto psy = ps_in_y(cv, ARR_MAX_END);
+      CGAL_assertion_code(auto psy = ps_in_y(cv, ARR_MAX_END));
       CGAL_assertion(psy == ARR_INTERIOR);
 
       auto on_y_idnt = is_on_y_identification(cv);
@@ -2763,7 +2765,6 @@ public:
                         Arr_boundary_cond_tag) const
     {
       auto cmp_y_at_x_left = m_self->compare_y_at_x_left_2_object();
-      auto cmp_y_at_x_right = m_self->compare_y_at_x_right_2_object();
 
       auto res1 = cmp_y_at_x_left(cv, cv1, p);
       auto res2 = cmp_y_at_x_left(cv, cv2, p);
@@ -2772,13 +2773,11 @@ public:
       if (cv_equal_cv1 || cv_equal_cv2) return false;
 
       auto res = cmp_y_at_x_left(cv1, cv2, p);
-      if (res == LARGER)
-        // cv1 is above cv2
-        return (res1 == LARGER || res2 == SMALLER);
+      // cv1 is above cv2
+      if (res == LARGER) return (res1 == LARGER || res2 == SMALLER);
 
-      if (res == SMALLER)
-        // cv1 is below cv2
-        return (res1 == LARGER && res2  == SMALLER);
+      // cv1 is below cv2
+      if (res == SMALLER) return (res1 == LARGER && res2  == SMALLER);
 
       // res == EQUAL && res1 != EQUAL && res2 != EQUAL
       return true;
@@ -3096,7 +3095,7 @@ public:
      * Dispatch calls to traits that handle open and close boundaries, resp.
      * The only reason for this dispatcher is the poor choice of different
      * names for the Traits functors that handle close and open boundaries:
-     * Open boundary traits use: Compare_x_at_limit_2
+     * Open boundary traits use: Compare_x_near_boundary_2
      * Close boundary traits use: Compare_x_on_boundary_2
      */
     Comparison_result cmp_x_on_bnd(const Point_2& p,
@@ -3111,7 +3110,7 @@ public:
      * Dispatch calls to traits that handle open and close boundaries, resp.
      * The only reason for this dispatcher is the poor choice of different
      * names for the Traits functors that handle close and open boundaries:
-     * Open boundary traits use: Compare_x_at_limit_2
+     * Open boundary traits use: Compare_x_near_boundary_2
      * Close boundary traits use: Compare_x_on_boundary_2
      */
     Comparison_result cmp_x_on_bnd(const X_monotone_curve_2& c1,
@@ -3177,14 +3176,6 @@ public:
         // px1, px2, py1 are interior
         if (py1 == ARR_INTERIOR) {
           CGAL_assertion(py2 != ARR_INTERIOR);
-#if 0
-          // This code is retained (commented out) because in the future, when
-          // Compare_x_at_limit_2 and Compare_x_on_boundary will be consolidated,
-          // say, to Compare_x_on_boundary, it will replace the call below.
-          typedef typename Self::Compare_x_on_boundary_2 Compare_x_on_boundary_2;
-          Compare_x_on_boundary_2 cmp_x_on_bnd =
-            m_self.compare_x_on_boundary_2_object();
-#endif
           const Point_2& c1_max = m_self.construct_max_vertex_2_object()(c1);
           Comparison_result res = cmp_x_on_bnd(c1_max, c2, ARR_MAX_END);
           if (res != EQUAL) return res;
@@ -3195,14 +3186,6 @@ public:
         // px1, px2, py2 are interior
         if (py2 == ARR_INTERIOR) {
           CGAL_assertion(py1 != ARR_INTERIOR);
-#if 0
-          // This code is retained (commented out) because in the future, when
-          // Compare_x_at_limit_2 and Compare_x_on_boundary will be consolidated,
-          // say, to Compare_x_on_boundary, it will replace the call below.
-          typedef typename Self::Compare_x_on_boundary_2 Compare_x_on_boundary_2;
-          Compare_x_on_boundary_2 cmp_x_on_bnd =
-            m_self.compare_x_on_boundary_2_object();
-#endif
           const Point_2& c2_max = m_self.construct_max_vertex_2_object()(c2);
           Comparison_result res = cmp_x_on_bnd(c2_max, c1, ARR_MAX_END);
           if (res != EQUAL) return CGAL::opposite(res);
@@ -3211,14 +3194,6 @@ public:
         }
 
         // Both py1 and py2 not interior
-#if 0
-        // This code is retained (commented out) because in the future, when
-        // Compare_x_at_limit_2 and Compare_x_on_boundary will be consolidated,
-        // say, to Compare_x_on_boundary, it will replace the call below.
-        typedef typename Self::Compare_x_on_boundary_2 Compare_x_on_boundary_2;
-        Compare_x_on_boundary_2 cmp_x_on_bnd =
-            m_self.compare_x_on_boundary_2_object();
-#endif
         Comparison_result res = cmp_x_on_bnd(c1, ARR_MAX_END, c2, ARR_MAX_END);
         if (res != EQUAL) return res;
 
@@ -3351,14 +3326,6 @@ public:
         //
         if (min_py1 == ARR_INTERIOR) {
           CGAL_assertion(min_py2 != ARR_INTERIOR);
-#if 0
-          // This code is retained (commented out) because in the future, when
-          // Compare_x_at_limit_2 and Compare_x_on_boundary will be consolidated,
-          // say, to Compare_x_on_boundary, it will replace the call below.
-          typedef typename Self::Compare_x_on_boundary_2 Compare_x_on_boundary_2;
-          Compare_x_on_boundary_2 cmp_x_on_bnd =
-            m_self.compare_x_on_boundary_2_object();
-#endif
           const Point_2& c1_min = m_self.construct_min_vertex_2_object()(c1);
           Comparison_result res = cmp_x_on_bnd(c1_min, c2, ARR_MIN_END);
           if (res != EQUAL) return res;
@@ -3368,14 +3335,6 @@ public:
 
         if (min_py2 == ARR_INTERIOR) {
           CGAL_assertion(min_py1 != ARR_INTERIOR);
-#if 0
-          // This code is retained (commented out) because in the future, when
-          // Compare_x_at_limit_2 and Compare_x_on_boundary will be consolidated,
-          // say, to Compare_x_on_boundary, it will replace the call below.
-          typedef typename Self::Compare_x_on_boundary_2 Compare_x_on_boundary_2;
-          Compare_x_on_boundary_2 cmp_x_on_bnd =
-            m_self.compare_x_on_boundary_2_object();
-#endif
           const Point_2& c2_min = m_self.construct_min_vertex_2_object()(c2);
 
           Comparison_result res = cmp_x_on_bnd(c2_min, c1, ARR_MIN_END);
@@ -3385,14 +3344,6 @@ public:
         }
 
         // Both min_py1 and min_py2 not interior
-#if 0
-        // This code is retained (commented out) because in the future, when
-        // Compare_x_at_limit_2 and Compare_x_on_boundary will be consolidated,
-        // say, to Compare_x_on_boundary, it will replace the call below.
-        typedef typename Self::Compare_x_on_boundary_2 Compare_x_on_boundary_2;
-        Compare_x_on_boundary_2 cmp_x_on_bnd =
-            m_self.compare_x_on_boundary_2_object();
-#endif
         Comparison_result res = cmp_x_on_bnd(c1, ARR_MIN_END, c2, ARR_MIN_END);
         if (res != EQUAL) return res;
 
diff --git a/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Arc_2.h b/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Arc_2.h
index 685635dab81..6b81a77bfab 100644
--- a/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Arc_2.h
+++ b/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Arc_2.h
@@ -1011,7 +1011,7 @@ public:
                                             compare_x_near_boundary_2)
         CGAL_precondition(Kernel_arc_2_equals_Arc_2 ||
                           dynamic_cast< const Kernel_arc_2* >(this) != nullptr);
-        return compare_x_near_limit_2(
+        return compare_x_near_boundary_2(
                 p, *dynamic_cast< const Kernel_arc_2* >(this), ce
         );
     }
@@ -1037,7 +1037,7 @@ public:
                                             compare_x_near_boundary_2)
         CGAL_precondition(Kernel_arc_2_equals_Arc_2 ||
                           dynamic_cast< const Kernel_arc_2* >(this) != nullptr);
-        return compare_x_near_limit_2(*dynamic_cast< const Kernel_arc_2* >(this), cv2, ce);
+        return compare_x_near_boundary_2(*dynamic_cast< const Kernel_arc_2* >(this), cv2, ce);
     }
 
     /*!\brief
diff --git a/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Filtered_curved_kernel_via_analysis_2_impl.h b/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Filtered_curved_kernel_via_analysis_2_impl.h
index dcd4bb372a0..e2eca4d6f10 100644
--- a/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Filtered_curved_kernel_via_analysis_2_impl.h
+++ b/Arrangement_on_surface_2/include/CGAL/Curved_kernel_via_analysis_2/Filtered_curved_kernel_via_analysis_2_impl.h
@@ -99,10 +99,6 @@ public:
     }
 };
 
-
-// TODO implement Compare_y_limit_on_boundary_2
-
-
 template < class CurvedKernelViaAnalysis_2, class FunctorBase >
 class Compare_y_near_boundary_2 :
         public FunctorBase::Compare_y_near_boundary_2 {
diff --git a/Arrangement_on_surface_2/test/Arrangement_on_surface_2/cgal_test_with_cmake b/Arrangement_on_surface_2/test/Arrangement_on_surface_2/cgal_test_with_cmake
index 2b9a9aee225..c38d1add91d 100755
--- a/Arrangement_on_surface_2/test/Arrangement_on_surface_2/cgal_test_with_cmake
+++ b/Arrangement_on_surface_2/test/Arrangement_on_surface_2/cgal_test_with_cmake
@@ -100,8 +100,6 @@ ARE_MERGEABLE=10
 MERGE=11
 ASSERTIONS=12
 CONSTRUCTOR=13
-COMPARE_X_AT_LIMIT=14
-COMPARE_X_NEAR_LIMIT=15
 COMPARE_X_ON_BOUNDARY=16
 COMPARE_X_NEAR_BOUNDARY=17
 COMPARE_Y_NEAR_BOUNDARY=18
@@ -499,13 +497,6 @@ execute_commands_new_structure()
     commands_indicator[COMPARE]=0
     commands_indicator[VERTEX]=0
     commands_indicator[IS_VERTICAL]=0
-    commands_indicator[COMPARE_X_AT_LIMIT]=0
-    commands_indicator[COMPARE_X_NEAR_LIMIT]=0
-    commands_indicator[COMPARE_X_ON_BOUNDARY]=0
-    commands_indicator[COMPARE_X_NEAR_BOUNDARY]=0
-    commands_indicator[COMPARE_Y_NEAR_BOUNDARY]=0
-    commands_indicator[PARAMETER_SPACE_X]=0
-    commands_indicator[PARAMETER_SPACE_Y]=0
     commands_indicator[COMPARE_Y_AT_X]=0
     commands_indicator[COMPARE_Y_AT_X_LEFT]=0
     commands_indicator[COMPARE_Y_AT_X_RIGHT]=0
@@ -516,6 +507,11 @@ execute_commands_new_structure()
     commands_indicator[MERGE]=0
     commands_indicator[ASSERTIONS]=0
     commands_indicator[CONSTRUCTOR]=0
+    commands_indicator[COMPARE_X_ON_BOUNDARY]=0
+    commands_indicator[COMPARE_X_NEAR_BOUNDARY]=0
+    commands_indicator[COMPARE_Y_NEAR_BOUNDARY]=0
+    commands_indicator[PARAMETER_SPACE_X]=0
+    commands_indicator[PARAMETER_SPACE_Y]=0
     commands_indicator[EQUAL]=0
     commands_indicator[PUSH_BACK]=0
     commands_indicator[PUSH_FRONT]=0
@@ -544,14 +540,6 @@ execute_commands_new_structure()
 	run_trapped_test test_traits data/$1/points \
 	    data/$1/xcurves data/$1/curves data/$1/is_vertical $2
     fi
-    if [ ${commands_indicator[$COMPARE_X_AT_LIMIT]} -ne 0 ] ; then
-	run_trapped_test test_traits data/$1/points \
-	    data/$1/xcurves data/$1/curves data/$1/compare_x_at_limit $2
-    fi
-    if [ ${commands_indicator[$COMPARE_X_NEAR_LIMIT]} -ne 0 ] ; then
-	run_trapped_test test_traits data/$1/points \
-	    data/$1/xcurves data/$1/curves data/$1/compare_x_near_limit $2
-    fi
     if [ ${commands_indicator[$COMPARE_X_ON_BOUNDARY]} -ne 0 ] ; then
 	run_trapped_test test_traits data/$1/points \
 	    data/$1/xcurves data/$1/curves data/$1/compare_x_on_boundary $2
@@ -650,8 +638,6 @@ execute_commands_traits_adaptor()
 
     commands_indicator[PARAMETER_SPACE_X]=0
     commands_indicator[PARAMETER_SPACE_Y]=0
-    commands_indicator[COMPARE_X_AT_LIMIT]=0
-    commands_indicator[COMPARE_X_NEAR_LIMIT]=0
     commands_indicator[COMPARE_X_ON_BOUNDARY]=0
     commands_indicator[COMPARE_X_NEAR_BOUNDARY]=0
     commands_indicator[COMPARE_Y_NEAR_BOUNDARY]=0
@@ -686,17 +672,6 @@ execute_commands_traits_adaptor()
 	    data/test_adaptor/$1/xcurves data/test_adaptor/$1/curves \
 	    data/test_adaptor/$1/parameter_space_y $2
     fi
-    if [ ${commands_indicator[$COMPARE_X_AT_LIMIT]} -ne 0 ] ; then
-	run_trapped_test test_traits_adaptor data/test_adaptor/$1/points \
-	    data/test_adaptor/$1/xcurves data/test_adaptor/$1/curves \
-	    data/test_adaptor/$1/compare_x_at_limit $2
-    fi
-    if [ ${commands_indicator[$COMPARE_X_NEAR_LIMIT]} -ne 0 ] ; then
-	run_trapped_test test_traits_adaptor data/test_adaptor/$1/points \
-	    data/test_adaptor/$1/xcurves data/test_adaptor/$1/curves \
-	    data/test_adaptor/$1/compare_x_near_limit $2
-    fi
-
     if [ ${commands_indicator[$COMPARE_X_ON_BOUNDARY]} -ne 0 ] ; then
 	run_trapped_test test_traits_adaptor data/test_adaptor/$1/points \
 	    data/test_adaptor/$1/xcurves data/test_adaptor/$1/curves \
@@ -1328,7 +1303,7 @@ test_linear_traits()
       IS_VERTICAL COMPARE_Y_AT_X COMPARE_Y_AT_X_LEFT INTERSECT \
       SPLIT MERGE \
       PARAMETER_SPACE_X PARAMETER_SPACE_Y \
-      COMPARE_X_AT_LIMIT COMPARE_X_NEAR_LIMIT COMPARE_Y_NEAR_BOUNDARY
+      COMPARE_X_ON_BOUNDARY COMPARE_X_NEAR_BOUNDARY COMPARE_Y_NEAR_BOUNDARY
   else
     echo "   ERROR:    not executed   test_traits linear_traits" >> $ERRORFILE
   fi
@@ -1570,7 +1545,7 @@ test_rational_arc_traits()
 
     execute_commands_new_structure rational_arcs rational_arc_traits \
       VERTEX IS_VERTICAL COMPARE_Y_AT_X COMPARE_Y_AT_X_LEFT SPLIT MERGE \
-      COMPARE_X_AT_LIMIT COMPARE_X_NEAR_LIMIT COMPARE_Y_NEAR_BOUNDARY
+      COMPARE_X_ON_BOUNDARY COMPARE_X_NEAR_BOUNDARY COMPARE_Y_NEAR_BOUNDARY
   else
     echo "   ERROR:    not executed   test_traits rational_arc_traits" >> $ERRORFILE
   fi