diff --git a/Packages/Triangulation_3/demo/Triangulation_3/demo.C b/Packages/Triangulation_3/demo/Triangulation_3/demo.C
index b014a6fa4ff..a00c14b4070 100644
--- a/Packages/Triangulation_3/demo/Triangulation_3/demo.C
+++ b/Packages/Triangulation_3/demo/Triangulation_3/demo.C
@@ -52,10 +52,10 @@ typedef double NT;
 // 
 // typedef CGAL::Filtered_exact<double, CGAL::MP_Float> NT;
 
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
-typedef CGAL::Triangulation_3<Gt> Triangulation;
-typedef CGAL::Delaunay_triangulation_3<Gt> Delaunay;
+typedef CGAL::Triangulation_3<K> Triangulation;
+typedef CGAL::Delaunay_triangulation_3<K> Delaunay;
 
 typedef Triangulation::Vertex_iterator Vertex_iterator;
 typedef Triangulation::Edge_iterator Edge_iterator;
@@ -69,7 +69,7 @@ typedef Triangulation::Cell_handle Cell_handle;
 typedef Triangulation::Vertex_handle Vertex_handle;
 typedef Triangulation::Locate_type Locate_type;
 
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
 ////////////////////// 
 // VISU GEOMVIEW
diff --git a/Packages/Triangulation_3/demo/Triangulation_3/demo_color.C b/Packages/Triangulation_3/demo/Triangulation_3/demo_color.C
index b7835fb590d..4e5af26db39 100644
--- a/Packages/Triangulation_3/demo/Triangulation_3/demo_color.C
+++ b/Packages/Triangulation_3/demo/Triangulation_3/demo_color.C
@@ -72,14 +72,14 @@ typedef double NT;
 // 
 // typedef CGAL::Filtered_exact<double, CGAL::MP_Float> NT;
 
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
-typedef CGAL::Triangulation_cell_base_3<Gt> Cb;
-typedef My_vertex_base<Gt> Vb;
+typedef CGAL::Triangulation_cell_base_3<K> Cb;
+typedef My_vertex_base<K> Vb;
 typedef CGAL::Triangulation_data_structure_3<Vb,Cb> Tds;
-typedef CGAL::Delaunay_triangulation_3<Gt, Tds> Delaunay;
+typedef CGAL::Delaunay_triangulation_3<K, Tds> Delaunay;
 
 typedef Delaunay::Vertex_iterator Vertex_iterator;
 typedef Delaunay::Vertex_handle Vertex_handle;
diff --git a/Packages/Triangulation_3/demo/Triangulation_3/demo_remove.C b/Packages/Triangulation_3/demo/Triangulation_3/demo_remove.C
index 7260638ada3..d7d220a6ecd 100644
--- a/Packages/Triangulation_3/demo/Triangulation_3/demo_remove.C
+++ b/Packages/Triangulation_3/demo/Triangulation_3/demo_remove.C
@@ -46,19 +46,19 @@ int main()
 #include <vector>
 
 typedef CGAL::Filtered_exact<double, CGAL::MP_Float> NT;
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
-typedef CGAL::Triangulation_vertex_base_3<Gt>            Vb;
+typedef CGAL::Triangulation_vertex_base_3<K>            Vb;
 typedef CGAL::Triangulation_hierarchy_vertex_base_3<Vb>  Vbh;
 typedef CGAL::Triangulation_cell_base_3<void>            Cb;
 typedef CGAL::Triangulation_data_structure_3<Vbh,Cb>     Tds;
-typedef CGAL::Delaunay_triangulation_3<Gt,Tds>           Dt;
+typedef CGAL::Delaunay_triangulation_3<K,Tds>           Dt;
 typedef CGAL::Triangulation_hierarchy_3<Dt>              Dh;
 
 typedef Dh::Vertex_iterator Vertex_iterator;
 typedef Dh::Vertex_handle Vertex_handle;
 typedef Dh::Cell_handle Cell_handle;
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
 ////////////////////// 
 // VISU GEOMVIEW
diff --git a/Packages/Triangulation_3/demo/Triangulation_3/demo_voronoi.C b/Packages/Triangulation_3/demo/Triangulation_3/demo_voronoi.C
index 90623c6586b..ce1c533d2fc 100644
--- a/Packages/Triangulation_3/demo/Triangulation_3/demo_voronoi.C
+++ b/Packages/Triangulation_3/demo/Triangulation_3/demo_voronoi.C
@@ -52,10 +52,10 @@ typedef double NT;
 // 
 // typedef CGAL::Filtered_exact<double, CGAL::MP_Float> NT;
 
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
-typedef CGAL::Triangulation_3<Gt> Triangulation;
-typedef CGAL::Delaunay_triangulation_3<Gt> Delaunay;
+typedef CGAL::Triangulation_3<K> Triangulation;
+typedef CGAL::Delaunay_triangulation_3<K> Delaunay;
 
 typedef Triangulation::Vertex_iterator Vertex_iterator;
 typedef Triangulation::Edge_iterator Edge_iterator;
@@ -69,7 +69,7 @@ typedef Triangulation::Cell_handle Cell_handle;
 typedef Triangulation::Vertex_handle Vertex_handle;
 typedef Triangulation::Locate_type Locate_type;
 
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
 int main()
 {
diff --git a/Packages/Triangulation_3/examples/Triangulation_3/example_color.C b/Packages/Triangulation_3/examples/Triangulation_3/example_color.C
index 80be4aac006..006bafbe4ea 100644
--- a/Packages/Triangulation_3/examples/Triangulation_3/example_color.C
+++ b/Packages/Triangulation_3/examples/Triangulation_3/example_color.C
@@ -40,14 +40,14 @@ typedef double NT;
 // 
 // typedef CGAL::Filtered_exact<double, CGAL::MP_Float> NT;
 
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
-typedef CGAL::Triangulation_cell_base_3<Gt> Cb;
-typedef My_vertex_base<Gt> Vb;
+typedef CGAL::Triangulation_cell_base_3<K> Cb;
+typedef My_vertex_base<K> Vb;
 typedef CGAL::Triangulation_data_structure_3<Vb,Cb> Tds;
-typedef CGAL::Delaunay_triangulation_3<Gt, Tds> Delaunay;
+typedef CGAL::Delaunay_triangulation_3<K, Tds> Delaunay;
 
 typedef Delaunay::Vertex_iterator Vertex_iterator;
 typedef Delaunay::Vertex_handle Vertex_handle;
diff --git a/Packages/Triangulation_3/examples/Triangulation_3/example_hierarchy.C b/Packages/Triangulation_3/examples/Triangulation_3/example_hierarchy.C
index 3f966aa8ebc..79057afa5b0 100644
--- a/Packages/Triangulation_3/examples/Triangulation_3/example_hierarchy.C
+++ b/Packages/Triangulation_3/examples/Triangulation_3/example_hierarchy.C
@@ -29,20 +29,20 @@ typedef double NT;
 // chosing the representation (cartesian or homogeneous)
 ////////////////////// 
 
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
 ////////////////////// 
 
-typedef CGAL::Triangulation_vertex_base_3<Gt>            Vb;
+typedef CGAL::Triangulation_vertex_base_3<K>            Vb;
 typedef CGAL::Triangulation_hierarchy_vertex_base_3<Vb>  Vbh;
 typedef CGAL::Triangulation_cell_base_3<void>            Cb;
 typedef CGAL::Triangulation_data_structure_3<Vbh,Cb>     Tds;
-typedef CGAL::Delaunay_triangulation_3<Gt,Tds>           Dt;
+typedef CGAL::Delaunay_triangulation_3<K,Tds>           Dt;
 typedef CGAL::Triangulation_hierarchy_3<Dt>              Dh;
 
 typedef Dh::Vertex_iterator Vertex_iterator;
 typedef Dh::Vertex_handle Vertex_handle;
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
 int main()
 {
diff --git a/Packages/Triangulation_3/examples/Triangulation_3/example_simple.C b/Packages/Triangulation_3/examples/Triangulation_3/example_simple.C
index da9337602c8..5a91cf856e1 100644
--- a/Packages/Triangulation_3/examples/Triangulation_3/example_simple.C
+++ b/Packages/Triangulation_3/examples/Triangulation_3/example_simple.C
@@ -28,17 +28,17 @@ typedef double NT;
 // chosing the representation (cartesian or homogeneous)
 ////////////////////// 
 
-typedef CGAL::Cartesian<NT> Gt;
+typedef CGAL::Cartesian<NT> K;
 
 ////////////////////// 
 
-typedef CGAL::Triangulation_3<Gt> Triangulation;
+typedef CGAL::Triangulation_3<K> Triangulation;
 
 typedef Triangulation::Cell_handle Cell_handle;
 typedef Triangulation::Vertex_handle Vertex_handle;
 typedef Triangulation::Locate_type Locate_type;
 
-typedef Gt::Point_3 Point;
+typedef K::Point_3 Point;
 
 int main()
 {
diff --git a/Packages/Triangulation_3/examples/Triangulation_3/example_tds.C b/Packages/Triangulation_3/examples/Triangulation_3/example_tds.C
index c5825610243..62c96c347cf 100644
--- a/Packages/Triangulation_3/examples/Triangulation_3/example_tds.C
+++ b/Packages/Triangulation_3/examples/Triangulation_3/example_tds.C
@@ -15,10 +15,10 @@ class empty_traits {
 public:
   class Point_3 {};
 };
-typedef empty_traits Gt;
+typedef empty_traits K;
 
-typedef CGAL::Triangulation_vertex_base_3<Gt>       Vb;
-typedef CGAL::Triangulation_cell_base_3<Gt>         Cb;
+typedef CGAL::Triangulation_vertex_base_3<K>       Vb;
+typedef CGAL::Triangulation_cell_base_3<K>         Cb;
 
 typedef CGAL::Triangulation_data_structure_3<Vb,Cb> Tds;