diff --git a/src/DemoApp/main.cpp b/src/DemoApp/main.cpp
index c54ff6f722b48d7cb11c15e73c08b2c11d30a430..9c7b0d26205cf0dd780942f0e9e04de527c7790c 100644
--- a/src/DemoApp/main.cpp
+++ b/src/DemoApp/main.cpp
@@ -57,25 +57,6 @@ class RendererController : public RadiumNBR::VisualizationController
     };
 };
 
-/**
- * Define a factory that set the wanted renderer on the window
- */
-class DemoWindowFactory : public Ra::Gui::BaseApplication::WindowFactory
-{
-  public:
-    DemoWindowFactory()  = delete;
-    ~DemoWindowFactory() = default;
-    explicit DemoWindowFactory( std::shared_ptr<RadiumNBR::NodeBasedRenderer> r ) : renderer( r ) {}
-    inline Ra::Gui::MainWindowInterface* createMainWindow() const override {
-        auto window = new Ra::Gui::SimpleWindow();
-        window->addRenderer( renderer->getRendererName(), renderer );
-        return window;
-    }
-
-  private:
-    std::shared_ptr<RadiumNBR::NodeBasedRenderer> renderer;
-};
-
 /** Process the scene to add the custom attribs to all objects
  */
 void AddCustomAttributeToMeshes() {
@@ -184,6 +165,29 @@ const std::string customFragmentColor{
     "return vec4( (specColor+col)*max(lightDir.z, 0), 1); \n"
     "}\n"};
 
+/**
+ *      Main code to demonstrate the use of a self configured node based renderer
+ */
+
+/**
+ * Define a factory that set the wanted renderer on the window
+ */
+class DemoWindowFactory : public Ra::Gui::BaseApplication::WindowFactory
+{
+  public:
+    DemoWindowFactory()  = delete;
+    ~DemoWindowFactory() = default;
+    explicit DemoWindowFactory( std::shared_ptr<RadiumNBR::NodeBasedRenderer> r ) : renderer( r ) {}
+    inline Ra::Gui::MainWindowInterface* createMainWindow() const override {
+        auto window = new Ra::Gui::SimpleWindow();
+        window->addRenderer( renderer->getRendererName(), renderer );
+        return window;
+    }
+
+  private:
+    std::shared_ptr<RadiumNBR::NodeBasedRenderer> renderer;
+};
+
 /**
  * main function.
  */
@@ -215,7 +219,7 @@ int main( int argc, char* argv[] ) {
     return app.exec();
 }
 
-
+// Will be removed soon
 #if 0
 int main( int argc, char* argv[] ) {
 
diff --git a/src/libRender/RadiumNBR/Gui/RendererPanel.cpp b/src/libRender/RadiumNBR/Gui/RendererPanel.cpp
index 518fabb2caee7ecb547fa8a614dada5ed36ff22f..8cd9070678c1d3e33cfad7600ae9fed11bb351c2 100644
--- a/src/libRender/RadiumNBR/Gui/RendererPanel.cpp
+++ b/src/libRender/RadiumNBR/Gui/RendererPanel.cpp
@@ -168,7 +168,9 @@ void RendererPanel::addSeparator() {
 void RendererPanel::addCodeEditor( const std::string& name,
                                    std::function<void( std::string )> callback,
                                    const std::string& initialText ) {
-
+// @todo : get a full featured code editor
+// cf https://www.codeproject.com/Articles/1139741/QCodeEditor-Widget-for-Qt
+// (code at https://www.codeproject.com/script/Articles/ViewDownloads.aspx?aid=1139741)
     auto button     = new QPushButton( name.c_str(), this );
     QDialog* dialog = nullptr;
     auto editDialog = [this, callback, initialText, dialog]() mutable {