diff --git a/Heat_method_3/doc/Heat_method_3/Concepts/HeatMethodTraits_3.h b/Heat_method_3/doc/Heat_method_3/Concepts/HeatMethodTraits_3.h
index bc9c43d4859..c2860c5c908 100644
--- a/Heat_method_3/doc/Heat_method_3/Concepts/HeatMethodTraits_3.h
+++ b/Heat_method_3/doc/Heat_method_3/Concepts/HeatMethodTraits_3.h
@@ -5,9 +5,9 @@
 
 The concept `HeatMethodTraits_3` describes the types,
 predicates, and constructions required by the traits class parameter of
-`CGAL::Heat_method_3::Heat_method_3`.
+`CGAL::Heat_method_3::Surface_mesh_geodesic_distances_3`.
 
-\cgalHasModel All the \cgal Kernels
+\cgalHasModel All the \cgal kernels
 
 
 */
@@ -28,8 +28,12 @@ public:
   /// The 2D point type.
   typedef unspecified_type Point_2;
 
-
-
+  typedef unspecified_type Compute_x_3;
+  typedef unspecified_type Compute_y_3;
+  typedef unspecified_type Compute_z_3;
+  typedef unspecified_type Construct_vector_3;
+  typedef unspecified_type Construct_cross_product_vector_3;
+  
 /// @}
 
 
diff --git a/Heat_method_3/doc/Heat_method_3/PackageDescription.txt b/Heat_method_3/doc/Heat_method_3/PackageDescription.txt
index 641c1223c7c..be0af7031f0 100644
--- a/Heat_method_3/doc/Heat_method_3/PackageDescription.txt
+++ b/Heat_method_3/doc/Heat_method_3/PackageDescription.txt
@@ -40,7 +40,7 @@ source vertices. }
 
 ## Functions ##
 
-- `CGAL::Heat_method_3::geodesic_distances_3()`
+- `CGAL::Heat_method_3::estimate_geodesic_distances()`
 
 */
 \todo Add more detailed cache
diff --git a/Heat_method_3/include/CGAL/Heat_method_3/Surface_mesh_geodesic_distances_3.h b/Heat_method_3/include/CGAL/Heat_method_3/Surface_mesh_geodesic_distances_3.h
index dcc5e33256c..69815dbf231 100644
--- a/Heat_method_3/include/CGAL/Heat_method_3/Surface_mesh_geodesic_distances_3.h
+++ b/Heat_method_3/include/CGAL/Heat_method_3/Surface_mesh_geodesic_distances_3.h
@@ -709,7 +709,7 @@ struct Base_helper<TriangleMesh, Traits, Intrinsic_Delaunay, LA, VertexPointMap>
 /**
  * \ingroup PkgHeatMethod
  *
- * Class `Surface_mesh_geodesic_distances_3` computes geodesic distances for a set of source vertices where sources can be added and removed.
+ * Class `Surface_mesh_geodesic_distances_3` computes estimated geodesic distances for a set of source vertices where sources can be added and removed.
  * The class performs a preprocessing step that does only depend on the mesh, so that the distance computation takes less
  * time after changes of the set of sources.
  *
@@ -860,11 +860,14 @@ public:
 /// \ingroup PkgHeatMethod
 /// computes for each vertex of the triangle mesh `tm` the estimated geodesic distance to a given source vertex.
 /// \tparam TriangleMesh a triangulated surface mesh, model of `FaceListGraph` and `HalfedgeListGraph`
-///         with `boost::graph_traits<TriangleMesh>::vertex_descriptor` as key type and `double` as value type.
 /// \tparam VertexDistanceMap a property map model of `WritablePropertyMap`
+///         with `boost::graph_traits<TriangleMesh>::vertex_descriptor` as key type and `double` as value type.
+/// \tparam Mode either the tag `Direct` or `Intrinsic_Delaunay`, which determines if the geodesic distance
+///              is computed directly on the mesh, or if the intrinsic Delaunay triangulation is applied first.
+///              The default is `Direct`.
 ///
 /// \sa CGAL::Heat_method_3::Surface_mesh_geodesic_distances_3
-template <typename TriangleMesh, typename VertexDistanceMap, typename Mode>
+template <typename TriangleMesh, typename VertexDistanceMap,Mode>
 void
 estimate_geodesic_distances(const TriangleMesh& tm,
                             VertexDistanceMap vdm,
@@ -876,8 +879,8 @@ estimate_geodesic_distances(const TriangleMesh& tm,
   hm.estimate_geodesic_distances(vdm);
 }
 
-  
- template <typename TriangleMesh, typename VertexDistanceMap>
+
+template <typename TriangleMesh, typename VertexDistanceMap>
 void
 estimate_geodesic_distances(const TriangleMesh& tm,
                             VertexDistanceMap vdm,
@@ -895,6 +898,9 @@ estimate_geodesic_distances(const TriangleMesh& tm,
 /// \tparam VertexDistanceMap a property map model of `WritablePropertyMap`
 ///         with `boost::graph_traits<TriangleMesh>::vertex_descriptor` as key type and `double` as value type.
 /// \tparam VertexRange a range with value type `boost::graph_traits<TriangleMesh>::vertex_descriptor`
+/// \tparam Mode either the tag `Direct` or `Intrinsic_Delaunay`, which determines if the geodesic distance
+///              is computed directly on the mesh, or if the intrinsic Delaunay triangulation is applied first.
+///              The default is `Direct`.
 ///
 /// \sa CGAL::Heat_method_3::Surface_mesh_geodesic_distances_3 
 template <typename TriangleMesh, typename VertexDistanceMap, typename VertexRange, typename Mode>