diff --git a/Installation/LICENSE b/Installation/LICENSE
index 1da3e31ab0b..1ba1accba3e 100644
--- a/Installation/LICENSE
+++ b/Installation/LICENSE
@@ -37,7 +37,7 @@ licenses:
 
 All other files that do not have an explicit copyright notice (e.g., all
 examples and some demos) are licensed under the Creative Commons CC0 1.0 license. The
-exact text can be found at https://creativecommons.org/publicdomain/zero/1.0/".
+exact text can be found at https://creativecommons.org/publicdomain/zero/1.0/.
 
 More information on the CGAL license can be found at
 https://www.cgal.org/license.html
diff --git a/Jet_fitting_3/examples/Jet_fitting_3/README b/Jet_fitting_3/examples/Jet_fitting_3/README
index fc4df02d7b6..9bb5e2e614e 100644
--- a/Jet_fitting_3/examples/Jet_fitting_3/README
+++ b/Jet_fitting_3/examples/Jet_fitting_3/README
@@ -6,7 +6,7 @@ takes as input a <inputPoints.txt> which is a xyz text file
 it compute the fitting for this single entry and 
 it outputs results in the <output.txt> file and on the standard std::cout
 
-Usage is : Single_estimation <inputPoints.txt> <d_fitting>, <d_monge>" 
+Usage is : Single_estimation <inputPoints.txt> <d_fitting>, <d_monge>
 
 in_points are sampled on 0.1(x²+2y²)
 
@@ -49,4 +49,4 @@ Note : if the nb of collected points is less than the required min number of
 ./Mesh_estimation
  ./Mesh_estimation -f data/ellipe0.003.off -d2 -m2 -a2 
  ./Mesh_estimation -f data/poly2x\^2+y\^2-0.062500-off -d2 -m2 -a2   
-		
\ No newline at end of file
+
diff --git a/Nef_3/include/CGAL/Nef_3/Edge_edge_overlay.h b/Nef_3/include/CGAL/Nef_3/Edge_edge_overlay.h
index df23689d98c..0ea84343b61 100644
--- a/Nef_3/include/CGAL/Nef_3/Edge_edge_overlay.h
+++ b/Nef_3/include/CGAL/Nef_3/Edge_edge_overlay.h
@@ -487,7 +487,7 @@ public:
           sce[1-i] = svc;
           --svc;
           if(svc->circle().oriented_side(sv[0]->point()) == os1) {
-            // sedges are only on one side "
+            // sedges are only on one side
             sce[i] = scb[1-i] = sce[1-i];
             empty_c[1-i] = true;
             done = true;
diff --git a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orient_polygon_soup.h b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orient_polygon_soup.h
index 20187552973..bcf2f9f6211 100644
--- a/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orient_polygon_soup.h
+++ b/Polygon_mesh_processing/include/CGAL/Polygon_mesh_processing/orient_polygon_soup.h
@@ -311,7 +311,7 @@ struct Polygon_soup_orienter
               V_ID i1 = polygons[index][(j+1)%size];
               edges[i0][i1].insert(index);
             }
-            // "inverse the orientation of polygon #index
+            // inverse the orientation of polygon #index
             oriented[index] = true;
             stack.push(index);
           }
@@ -323,7 +323,7 @@ struct Polygon_soup_orienter
               const P_ID index = *(it_other_orient->second.begin());
               if(oriented[index]) continue; //nothing todo already processed and correctly oriented
               oriented[index] = true;
-              // "keep the orientation of polygon #index
+              // keep the orientation of polygon #index
               stack.push(index);
             }
           }
diff --git a/Stream_support/include/CGAL/IO/PLY.h b/Stream_support/include/CGAL/IO/PLY.h
index f2845004424..34dfd1ddba6 100644
--- a/Stream_support/include/CGAL/IO/PLY.h
+++ b/Stream_support/include/CGAL/IO/PLY.h
@@ -41,7 +41,7 @@ namespace CGAL {
 namespace IO {
 namespace internal {
 
-// HEdgesRange" = range of std::pair<unsigned int, unsigned int>
+// HEdgesRange = range of std::pair<unsigned int, unsigned int>
 // HUVRange = range of std::pair<float, float>
 template <class PointRange, class PolygonRange, class ColorOutputIterator, class HEdgesOutputIterator, class HUVOutputIterator>
 bool read_PLY(std::istream& is,