diff --git a/Installation/CHANGES b/Installation/CHANGES
index 743e4cf1c60..6cd57d96473 100644
--- a/Installation/CHANGES
+++ b/Installation/CHANGES
@@ -13,11 +13,11 @@ Release date: September 2013
     neighbor queries and primitives to build the dual Voronoi diagrams.
 
 
-* API changes
+* API Changes
 
  ** 2D and 3D Geometry Kernel
 
-  - The intersection functions and functors used to returned a CGAL::Object in
+  - The intersection functions and functors used to return a CGAL::Object in
     order to deal with the different possible return types. However, depending
     on the arguments it is possible to reduce the possible return types to a
     small set. For this reason and to take advantage of the type safety, we
@@ -33,10 +33,17 @@ Release date: September 2013
  ** 2D Arrangements
 
   - The point location functionalities now uses a boost::variant instead of a
-    CGAL::Object. For convenience, The previous behavior can be restored by
+    CGAL::Object. For convenience, the previous behavior can be restored by
     defining the macro CGAL_ARR_POINT_LOCATION_VERSION to 1.
 
 
+ ** 3D Fast Intersection and Distance Computation
+
+  - Following the intersection API change, Object_and_primitive_id has been
+    replaced by a template class Intersection_and_primitive_id<Query> to
+    determine the type depending on the query object type.
+
+
  ** CGAL and Boost Property Maps
 
   - The key_type of the property maps provided by CGAL used to be an iterator.
@@ -69,7 +76,7 @@ Release date: September 2013
 * Combinatorial Maps
 
   - Two bug fixes: do not use the 2 least significant bits for cell attribute
-    without dart support; add share a mark in CMap_cell_iterator.
+    without dart support; share the mark when copying a CMap_cell_iterator.
 
   - Add a constructor taking a given combinatorial map as argument, possibly
     with different dimension and/or different attributes. This allows to
@@ -123,7 +130,7 @@ Release date: September 2013
     input when possible to these functions.
 
 
-* 2D Apollonius graphs
+* 2D Apollonius Graphs
 
   - Modified insertion algorithm so that the code can handle pseudo-circles as
     well.
@@ -160,7 +167,7 @@ Release date: September 2013
     replaced by a template class Intersection_and_primitive_id<Query> to
     determine the type depending on the query object type.
 
-  - Introduce the class AABB_halfedge_graph_segment_primitive which replaces
+  - Introduce the class AABB_halfedge_graph_segment_primitive, that replaces
     the class AABB_polyhedron_segment_primitive (which is now deprecated). The
     new class is more general and can be used with any model of HalfedgeGraph.
 
diff --git a/Installation/changes.html b/Installation/changes.html
index 68faa78b72c..07f295fc00d 100755
--- a/Installation/changes.html
+++ b/Installation/changes.html
@@ -124,7 +124,7 @@ and <code>src/</code> directories).
   <h3>API Changes</h3>
       <h4>2D and 3D Geometry Kernel </h4>
       <ul>
-        <li> The intersection functions and functors used to returned
+        <li> The intersection functions and functors used to return
           a <code>CGAL::Object</code> in order to deal with the different
           possible return types. However, depending on the arguments it is
           possible to reduce the possible return types to a small set. For
@@ -197,7 +197,7 @@ and <code>src/</code> directories).
   <h3>Combinatorial Maps</h3>
   <ul>
     <li>Two bug fixes: do not use the 2 least significant bits for cell
-      attribute without dart support; share the mark when copying a 
+      attribute without dart support; share the mark when copying a
       CMap_cell_iterator.</li>
     <li>Add a constructor taking a given combinatorial map as argument,
       possibly with different dimension and/or different attributes. This
@@ -293,7 +293,7 @@ and <code>src/</code> directories).
       the type depending on the query object type.
     </li>
     <li>Introduce the
-      class <code>AABB_halfedge_graph_segment_primitive</code> which
+      class <code>AABB_halfedge_graph_segment_primitive</code>, that
       replaces the class <code>AABB_polyhedron_segment_primitive</code>
       (which is now deprecated).  The new class is more general and can be
       used with any model of <code>HalfedgeGraph</code>.</li>