diff --git a/examples/PoolBox/application/src/Overlay/ScreenCenter/include/frame.hpp b/examples/PoolBox/application/src/Overlay/ScreenCenter/include/frame.hpp
index 05a6153d..1de7b08b 100644
--- a/examples/PoolBox/application/src/Overlay/ScreenCenter/include/frame.hpp
+++ b/examples/PoolBox/application/src/Overlay/ScreenCenter/include/frame.hpp
@@ -7,10 +7,12 @@ namespace ScreenCenter {
     
     class Frame : public GPU::internal::LinkedElementCreator<Frame> {
     private:
-        GPU::TILE top_left[2];
-        GPU::TILE top_right[2];
-        GPU::TILE bottom_left[2];
-        GPU::TILE bottom_right[2];
+        GPU::TILE            top_left[2];
+        GPU::TILE            top_right[2];
+        GPU::TILE            bottom_left[2];
+        GPU::TILE            bottom_right[2];
+        GPU::LINE_G_MULTI<5> border;
+        GPU::LINE_G_SINGLE   cross[2];
 
     public:
         static constexpr Frame::Linked create() {
@@ -30,6 +32,17 @@ namespace ScreenCenter {
 
             frame.bottom_right[0] = Make::TILE(Make::AreaI16(GPU::Display::Width - Size.height, GPU::Display::Height - Size.width, Size.height, Size.width), BaseColor);
             frame.bottom_right[1] = Make::TILE(Make::AreaI16(GPU::Display::Width - Size.width, GPU::Display::Height - Size.height, Size.width, Size.height), BaseColor);
+            
+            frame.border = Make::LINE_G(
+                GPU::ColorVertex{GPU::Color24::Red(),    Make::Vertex(0,                       0)},
+                GPU::ColorVertex{GPU::Color24::Green(),  Make::Vertex(0,                       GPU::Display::Height - 1)},
+                GPU::ColorVertex{GPU::Color24::Blue(),   Make::Vertex(GPU::Display::Width - 1, GPU::Display::Height - 1)},
+                GPU::ColorVertex{GPU::Color24::Yellow(), Make::Vertex(GPU::Display::Width - 1, 0)},
+                GPU::ColorVertex{GPU::Color24::Red(),    Make::Vertex(0,                       0)}
+            );
+
+            frame.cross[0] = Make::LINE_G(frame.border[0], frame.border[2]);
+            frame.cross[1] = Make::LINE_G(frame.border[3], frame.border[1]);
             return frame.linked();
         }
     };
diff --git a/include/PSX/GPU/Primitives/primitive_line_types.hpp b/include/PSX/GPU/Primitives/primitive_line_types.hpp
index ac1c6361..96d337b2 100644
--- a/include/PSX/GPU/Primitives/primitive_line_types.hpp
+++ b/include/PSX/GPU/Primitives/primitive_line_types.hpp
@@ -69,6 +69,22 @@ namespace JabyEngine {
                 Vertex      start_point;
                 Body        points[N];
                 Termination end;
+
+                template<typename T = Body>
+                constexpr typename enable_if<is_same<T, Vertex>::value, Vertex>::type operator[](size_t idx) const {
+                    if(idx == 0) {
+                        return this->start_point;
+                    }
+                    return this->points[idx - 1];
+                }
+
+                template<typename T = Body>
+                constexpr typename enable_if<is_same<T, ColorVertex>::value, ColorVertex>::type operator[](size_t idx) const {
+                    if(idx == 0) {
+                        return ColorVertex::create(this->head.color, this->start_point);
+                    }
+                    return this->points[idx - 1];
+                }
             };
         }
 
@@ -105,5 +121,13 @@ namespace JabyEngine {
                 return {.head = LineHead::create(start_point.color, IdentityCode, true), .start_point = start_point.position, .points = {rest...}, .end = Termination::create()};
             }
         };
+
+        using LINE_F_SINGLE = internal::SingleLine<Vertex>;
+        template<size_t N>
+        using LINE_F_MULTI = internal::MultiLine<Vertex, N - 1>;
+
+        using LINE_G_SINGLE = internal::SingleLine<ColorVertex>;
+        template<size_t N>
+        using LINE_G_MULTI = internal::MultiLine<ColorVertex, N - 1>;
     }
 }
\ No newline at end of file
diff --git a/include/PSX/GPU/make_gpu_primitives.hpp b/include/PSX/GPU/make_gpu_primitives.hpp
index ff6761ef..c359e699 100644
--- a/include/PSX/GPU/make_gpu_primitives.hpp
+++ b/include/PSX/GPU/make_gpu_primitives.hpp
@@ -187,21 +187,21 @@ namespace JabyEngine {
 
         // ###################################################################
 
-        static constexpr GPU::internal::SingleLine<GPU::Vertex> LINE_F(const GPU::Color24& color, const GPU::Vertex& start_point, const GPU::Vertex& end_point) {
+        static constexpr GPU::LINE_F_SINGLE LINE_F(const GPU::Color24& color, const GPU::Vertex& start_point, const GPU::Vertex& end_point) {
             return GPU::LINE_F::create(color, start_point, end_point);
         }
 
         template<typename...ARGS>
-        static constexpr GPU::internal::MultiLine<GPU::Vertex, sizeof...(ARGS)> LINE_F(const GPU::Color24& color, const GPU::Vertex& start_point, const ARGS&...rest) {
+        static constexpr GPU::LINE_F_MULTI<sizeof...(ARGS) + 1> LINE_F(const GPU::Color24& color, const GPU::Vertex& start_point, const ARGS&...rest) {
             return GPU::LINE_F::create(color, start_point, rest...);
         }
 
-        static constexpr GPU::internal::SingleLine<GPU::ColorVertex> LINE_G(const GPU::ColorVertex& start_point, const GPU::ColorVertex& end_point) {
+        static constexpr GPU::LINE_G_SINGLE LINE_G(const GPU::ColorVertex& start_point, const GPU::ColorVertex& end_point) {
             return GPU::LINE_G::create(start_point, end_point);
         }
 
         template<typename...ARGS>
-        static constexpr GPU::internal::MultiLine<GPU::ColorVertex, sizeof...(ARGS)> LINE_G(const GPU::ColorVertex& start_point, const ARGS&...rest) {
+        static constexpr GPU::LINE_G_MULTI<sizeof...(ARGS) + 1> LINE_G(const GPU::ColorVertex& start_point, const ARGS&...rest) {
             return GPU::LINE_G::create(start_point, rest...);
         }