diff --git a/.github/workflows/story_editor.yml b/.github/workflows/story_editor.yml
index 333a190..05022f9 100644
--- a/.github/workflows/story_editor.yml
+++ b/.github/workflows/story_editor.yml
@@ -24,11 +24,13 @@ jobs:
               mkdir build
               cd build
               cmake -DCMAKE_BUILD_TYPE=Release ..
+              make
               ls
         - name: package_setup
           working-directory: ./story-editor/build
           run : |
-              make package
+              cpack
+              cpack -G DEB
               ls
   build_win32:
       runs-on: ubuntu-latest
@@ -39,4 +41,4 @@ jobs:
         - name: build
           working-directory: ./story-editor
           run : |
-              ./build_win32.sh
\ No newline at end of file
+              ./build_win32.sh
diff --git a/.vscode/settings.json b/.vscode/settings.json
index 84dc12f..80c7c9f 100644
--- a/.vscode/settings.json
+++ b/.vscode/settings.json
@@ -6,11 +6,102 @@
         "${workspaceFolder}/software"
     ],
     "files.associations": {
+        "*.css": "tailwindcss",
         "**/frontmatter.json": "jsonc",
         "**/.frontmatter/config/*.json": "jsonc",
-        "*.css": "tailwindcss",
         "pico_i2s.pio.h": "c",
-        "pico_i2s.h": "c"
+        "pico_i2s.h": "c",
+        "cctype": "cpp",
+        "cmath": "cpp",
+        "cstddef": "cpp",
+        "cstdio": "cpp",
+        "cstdlib": "cpp",
+        "cstring": "cpp",
+        "ctime": "cpp",
+        "array": "cpp",
+        "atomic": "cpp",
+        "*.tcc": "cpp",
+        "chrono": "cpp",
+        "cstdint": "cpp",
+        "list": "cpp",
+        "map": "cpp",
+        "set": "cpp",
+        "string": "cpp",
+        "unordered_map": "cpp",
+        "vector": "cpp",
+        "exception": "cpp",
+        "algorithm": "cpp",
+        "functional": "cpp",
+        "iterator": "cpp",
+        "memory": "cpp",
+        "memory_resource": "cpp",
+        "numeric": "cpp",
+        "optional": "cpp",
+        "random": "cpp",
+        "ratio": "cpp",
+        "regex": "cpp",
+        "string_view": "cpp",
+        "tuple": "cpp",
+        "type_traits": "cpp",
+        "utility": "cpp",
+        "fstream": "cpp",
+        "future": "cpp",
+        "iomanip": "cpp",
+        "iosfwd": "cpp",
+        "iostream": "cpp",
+        "istream": "cpp",
+        "limits": "cpp",
+        "mutex": "cpp",
+        "ostream": "cpp",
+        "sstream": "cpp",
+        "stdexcept": "cpp",
+        "thread": "cpp",
+        "variant": "cpp",
+        "bitset": "cpp",
+        "*.ipp": "cpp",
+        "deque": "cpp",
+        "forward_list": "cpp",
+        "unordered_set": "cpp",
+        "initializer_list": "cpp",
+        "ranges": "cpp",
+        "span": "cpp",
+        "valarray": "cpp",
+        "format": "cpp",
+        "samd21.h": "c",
+        "ost_hal.h": "c",
+        "debug.h": "c",
+        "numbers": "cpp",
+        "qtconcurrentdepends": "cpp",
+        "qtcoredepends": "cpp",
+        "qtguidepends": "cpp",
+        "qtnetworkdepends": "cpp",
+        "qtopengldepends": "cpp",
+        "qtqmldepends": "cpp",
+        "qtwidgetsdepends": "cpp",
+        "complex": "cpp",
+        "system_error": "cpp",
+        "typeindex": "cpp",
+        "typeinfo": "cpp",
+        "compare": "cpp",
+        "any": "cpp",
+        "filesystem": "cpp",
+        "stdbool.h": "c",
+        "bit": "cpp",
+        "charconv": "cpp",
+        "cinttypes": "cpp",
+        "clocale": "cpp",
+        "codecvt": "cpp",
+        "concepts": "cpp",
+        "condition_variable": "cpp",
+        "cstdarg": "cpp",
+        "cwchar": "cpp",
+        "cwctype": "cpp",
+        "new": "cpp",
+        "semaphore": "cpp",
+        "shared_mutex": "cpp",
+        "stop_token": "cpp",
+        "streambuf": "cpp",
+        "cfenv": "cpp"
     }
 
 }
\ No newline at end of file
diff --git a/shared/story_project.cpp b/shared/story_project.cpp
index 3a00e4f..894cbd5 100644
--- a/shared/story_project.cpp
+++ b/shared/story_project.cpp
@@ -8,12 +8,14 @@
 #include "story_project.h"
 #include "json.hpp"
 #include "media_node.h"
+#include "function_node.h"
 #include "sys_lib.h"
 
 StoryProject::StoryProject(ILogger &log)
     : m_log(log)
 {
     registerNode<MediaNode>("media-node");
+    registerNode<FunctionNode>("function-node");
 }
 
 StoryProject::~StoryProject()
diff --git a/shared/story_project.h b/shared/story_project.h
index 5f514bf..5921606 100644
--- a/shared/story_project.h
+++ b/shared/story_project.h
@@ -49,8 +49,6 @@ struct StoryProject : public IStoryProject
 {
 
 public:
-
-
     StoryProject(ILogger &log);
     ~StoryProject();
 
@@ -142,6 +140,12 @@ public:
     void AddConnection(std::shared_ptr<Connection> c);
     void DeleteNode(const std::string &id);
     void DeleteLink(std::shared_ptr<Connection> c);
+
+    std::vector<std::string> GetNodeTypes() const { 
+        std::vector<std::string> l;
+        for(auto const& imap: m_registry) l.push_back(imap.first);
+        return l;
+    }
     
 private:
     ILogger &m_log;
diff --git a/story-editor/CMakeLists.txt b/story-editor/CMakeLists.txt
index 6e760bf..f541dd1 100644
--- a/story-editor/CMakeLists.txt
+++ b/story-editor/CMakeLists.txt
@@ -157,7 +157,7 @@ FetchContent_Declare(
 
 
 set(SDL3IMAGE_INSTALL OFF)
-set(BUILD_SHARED_LIBS FALSE)
+set(BUILD_SHARED_LIBS TRUE)
 FetchContent_MakeAvailable(sdl_image)
 include_directories(${sdl_image_SOURCE_DIR}/include)
 
@@ -191,6 +191,8 @@ set(SRCS
     src/node_engine/base_node.cpp
     src/node_engine/media_node.h
     src/node_engine/media_node.cpp
+    src/node_engine/function_node.h
+    src/node_engine/function_node.cpp
     src/node_engine/connection.cpp
     src/node_engine/connection.h
 
@@ -200,6 +202,8 @@ set(SRCS
     src/node_editor/base_node_widget.cpp
     src/node_editor/node_editor_window.h
     src/node_editor/node_editor_window.cpp
+    src/node_editor/function_node_widget.h
+    src/node_editor/function_node_widget.cpp
 
     src/resources_window.cpp
     src/resources_window.h
@@ -340,6 +344,7 @@ target_link_directories(${STORY_EDITOR_PROJECT} PUBLIC ${sdl3_BINARY_DIR} ${curl
 # certaines informations à CPACK
 set(SDL_BIN_DIR ${sdl3_BINARY_DIR})
 set(SDL_IMAGE_BIN_DIR ${sdl_image_BINARY_DIR})
+set(SDL_MIXER_BIN_DIR ${sdl3_mixer_BINARY_DIR})
 
 if(UNIX)
     target_link_libraries(${STORY_EDITOR_PROJECT}
@@ -357,6 +362,7 @@ elseif(WIN32)
         OpenGL::GL
         SDL3::SDL3
         SDL3_image::SDL3_image
+        SDL3_mixer::SDL3_mixer
         libcurl_static
         ws2_32.lib psapi.lib setupapi.lib cfgmgr32.lib advapi32.lib
     )
@@ -369,6 +375,7 @@ install(TARGETS ${STORY_EDITOR_PROJECT} RUNTIME DESTINATION ".")
 
 # Personnaliser les options d'installation
 set(CPACK_PACKAGE_NAME "Open-Story-Editor")
+set(CPACK_DEBIAN_PACKAGE_MAINTAINER "Anthony Rabine")
 set(CPACK_PACKAGE_DESCRIPTION "Open Story Teller - Node based editor")
 set(CPACK_PACKAGE_VENDOR "D8S")
 set(CPACK_PACKAGE_VERSION_MAJOR "${PROJECT_VERSION_MAJOR}")
@@ -384,6 +391,8 @@ install_files("." FILES "${CMAKE_SOURCE_DIR}/tools/imgui.ini")
 
 if(WIN32)
     install_files("." FILES "${SDL_BIN_DIR}/SDL3.dll")
+    install_files("." FILES "${SDL_IMAGE_BIN_DIR}/SDL3_image.dll")
+    install_files("." FILES "${SDL_MIXER_BIN_DIR}/SDL3_mixer.dll")
     install_files("." FILES "/usr/lib/gcc/x86_64-w64-mingw32/10-posix/libstdc++-6.dll")
     install_files("." FILES "/usr/x86_64-w64-mingw32/lib/libwinpthread-1.dll")
     install_files("." FILES "/usr/lib/gcc/x86_64-w64-mingw32/10-posix/libgcc_s_seh-1.dll")
@@ -393,9 +402,10 @@ if(WIN32)
 endif()
 
 if(LINUX)
-    install_files("." FILES "${SDL_BIN_DIR}/SDL3.so")
-    install_files("." FILES "${SDL_IMAGE_BIN_DIR}/SDL3_image.so")
-    
+
+    install_files("." FILES "${SDL_BIN_DIR}/libSDL3.so")
+    install_files("." FILES "${SDL_IMAGE_BIN_DIR}/libSDL3_image.so")
+    install_files("." FILES "${SDL_MIXER_BIN_DIR}/libSDL3_mixer.so")
 endif()
 
 if (APPLE)
diff --git a/story-editor/src/i_story_manager.h b/story-editor/src/i_story_manager.h
index 22a517a..d381f8c 100644
--- a/story-editor/src/i_story_manager.h
+++ b/story-editor/src/i_story_manager.h
@@ -36,6 +36,7 @@ public:
     virtual void Log(const std::string &txt, bool critical = false) = 0;
     virtual void PlaySoundFile(const std::string &fileName) = 0;
     virtual std::string BuildFullAssetsPath(const std::string_view fileName) const = 0;
+    virtual void OpenFunction(const std::string &uuid, const std::string &name) = 0;
 
     // Resources management
     virtual std::pair<FilterIterator, FilterIterator> Images() = 0;
diff --git a/story-editor/src/main_window.cpp b/story-editor/src/main_window.cpp
index a26980b..a8d3695 100644
--- a/story-editor/src/main_window.cpp
+++ b/story-editor/src/main_window.cpp
@@ -822,7 +822,7 @@ void MainWindow::CloseProject()
 
     m_resources.Clear();
 
-    m_nodeEditorWindow.Clear();
+    m_nodeEditorWindow.Initialize();
     m_emulatorWindow.ClearImage();
     m_consoleWindow.ClearLog();
     m_codeEditorWindow.ClearErrors();
@@ -980,6 +980,11 @@ std::pair<FilterIterator, FilterIterator> MainWindow::Sounds()
     return m_resources.Sounds();
 }
 
+void MainWindow::OpenFunction(const std::string &uuid, const std::string &name)
+{
+    m_nodeEditorWindow.OpenFunction(uuid, name);
+}
+
 void MainWindow::AddResource(std::shared_ptr<Resource> res)
 {
     m_resources.Add(res);
diff --git a/story-editor/src/main_window.h b/story-editor/src/main_window.h
index 0a2d8e0..fbe43c9 100644
--- a/story-editor/src/main_window.h
+++ b/story-editor/src/main_window.h
@@ -130,6 +130,7 @@ private:
     virtual std::string BuildFullAssetsPath(const std::string_view fileName) const override;
     virtual std::pair<FilterIterator, FilterIterator> Images() override;
     virtual std::pair<FilterIterator, FilterIterator> Sounds() override;
+    virtual void OpenFunction(const std::string &uuid, const std::string &name) override;
 
     virtual void AddResource(std::shared_ptr<Resource> res) override;
     virtual void ClearResources() override;
diff --git a/story-editor/src/media_converter.cpp b/story-editor/src/media_converter.cpp
index e0763eb..cf055a1 100644
--- a/story-editor/src/media_converter.cpp
+++ b/story-editor/src/media_converter.cpp
@@ -17,6 +17,7 @@
 #define DR_MP3_IMPLEMENTATION
 #include "dr_mp3.h"
 
+#define QOI_IMPLEMENTATION
 #include "qoi.h"
 
 
diff --git a/story-editor/src/node_editor/base_node_widget.cpp b/story-editor/src/node_editor/base_node_widget.cpp
index 427fd95..d8a692e 100644
--- a/story-editor/src/node_editor/base_node_widget.cpp
+++ b/story-editor/src/node_editor/base_node_widget.cpp
@@ -9,6 +9,7 @@ BaseNodeWidget::BaseNodeWidget(IStoryManager &manager,  std::shared_ptr<BaseNode
     : m_manager(manager)
     , m_base(base)
 {
+    // A node is specific to the Node Gfx library
     m_node = std::make_unique<Node>(GetNextId(), ""); // ImGui internal ID
     std::cout << " --> Created node widget: " << (int)m_node->ID.Get() << std::endl;
 }
@@ -58,6 +59,13 @@ void BaseNodeWidget::Initialize()
     
 }
 
+void BaseNodeWidget::SetOutPinName(int pinIndex, const std::string &name)
+{
+    if (pinIndex < m_node->Outputs.size())
+    {
+        m_node->Outputs[pinIndex].Name = name;
+    }
+}
 
 void BaseNodeWidget::FrameStart()
 {
@@ -107,7 +115,14 @@ void BaseNodeWidget::DrawPins()
         ImGui::Dummy(ImVec2(320 - textWidth * 2, 0)); // Hacky magic number to space out the output pin.
         ImGui::SameLine();
         ed::BeginPin(output.ID, ed::PinKind::Output);
-        ImGui::Text( "#%d " ICON_MDI_OCTAGON_OUTLINE, i++);
+        if (output.Name.empty())
+        {
+            ImGui::Text( "#%d " ICON_MDI_OCTAGON_OUTLINE, i++);
+        }
+        else
+        {
+            ImGui::Text( "%s" ICON_MDI_OCTAGON_OUTLINE, output.Name.c_str()  );
+        }
         ed::EndPin();
     }
 }
diff --git a/story-editor/src/node_editor/base_node_widget.h b/story-editor/src/node_editor/base_node_widget.h
index 55f8769..7ec9bc8 100644
--- a/story-editor/src/node_editor/base_node_widget.h
+++ b/story-editor/src/node_editor/base_node_widget.h
@@ -106,6 +106,7 @@ public:
     virtual void Draw() = 0;
     virtual void DrawProperties() = 0;
 
+    void SetOutPinName(int pinIndex, const std::string &name);
 
     void FrameStart();
     void FrameEnd();
diff --git a/story-editor/src/node_editor/function_node_widget.cpp b/story-editor/src/node_editor/function_node_widget.cpp
new file mode 100644
index 0000000..06839bb
--- /dev/null
+++ b/story-editor/src/node_editor/function_node_widget.cpp
@@ -0,0 +1,51 @@
+
+#include <sstream>
+#include "function_node_widget.h"
+
+namespace ed = ax::NodeEditor;
+#include "IconsMaterialDesignIcons.h"
+#include "story_project.h"
+#include "uuid.h"
+
+FunctionNodeWidget::FunctionNodeWidget(IStoryManager &manager, std::shared_ptr<BaseNode> node)
+    : BaseNodeWidget(manager, node)
+    , m_manager(manager)
+{
+    // Create defaut one input and one output
+    AddInput();
+    AddOutputs(2);
+    SetOutPinName(0, "Success");
+    SetOutPinName(1, "Failure");
+    m_functionUuid = Uuid().String();
+}
+
+void FunctionNodeWidget::Draw()
+{
+    BaseNodeWidget::FrameStart();
+
+    ImGui::TextUnformatted(m_functionName.c_str());
+    if (ImGui::Button("> Open function"))
+    {
+        m_manager.OpenFunction(m_functionUuid, m_functionName);
+    }
+
+    DrawPins();
+
+    BaseNodeWidget::FrameEnd();
+
+}
+
+void FunctionNodeWidget::Initialize()
+{
+    BaseNodeWidget::Initialize();
+    m_functionName = "Function";
+}
+
+void FunctionNodeWidget::DrawProperties()
+{
+    
+    
+
+}
+
+
diff --git a/story-editor/src/node_editor/function_node_widget.h b/story-editor/src/node_editor/function_node_widget.h
new file mode 100644
index 0000000..cfc37aa
--- /dev/null
+++ b/story-editor/src/node_editor/function_node_widget.h
@@ -0,0 +1,29 @@
+#pragma once
+
+#include <vector>
+#include <map>
+#include <mutex>
+#include <set>
+
+#include "base_node_widget.h"
+#include "i_story_manager.h"
+#include "i_story_project.h"
+#include "gui.h"
+#include <imgui_node_editor.h>
+#include "media_node.h"
+
+class FunctionNodeWidget : public BaseNodeWidget
+{
+public:
+    FunctionNodeWidget(IStoryManager &manager, std::shared_ptr<BaseNode> node);
+
+    void Draw() override;
+
+    virtual void DrawProperties() override;
+    virtual void Initialize() override;
+
+private:
+    IStoryManager &m_manager;
+    std::string m_functionName;
+    std::string m_functionUuid; 
+};
diff --git a/story-editor/src/node_editor/node_editor_page.h b/story-editor/src/node_editor/node_editor_page.h
new file mode 100644
index 0000000..ec5e304
--- /dev/null
+++ b/story-editor/src/node_editor/node_editor_page.h
@@ -0,0 +1,222 @@
+#pragma once
+
+#include <map>
+#include <set>
+#include <list>
+#include <utility>
+
+#include <imgui_node_editor.h>
+#include "base_node_widget.h"
+
+namespace ed = ax::NodeEditor;
+
+struct EditorLink {
+    ed::LinkId Id;
+    ed::PinId  InputId;
+    ed::PinId  OutputId;
+};
+
+// Stuff from ImGuiNodeEditor, each element has a unique ID within one editor
+struct LinkInfo
+{
+
+    LinkInfo()
+    {
+        ed_link = std::make_shared<EditorLink>();
+        model = std::make_shared<Connection>();
+    }
+
+    std::shared_ptr<EditorLink> ed_link;
+    std::shared_ptr<Connection> model;
+};
+
+
+struct NodeEditorPage  {
+    ed::Config config;
+    ed::EditorContext* EditorContext;
+    std::list<std::shared_ptr<BaseNodeWidget>>  m_nodes;
+    std::list<std::shared_ptr<LinkInfo>> m_links;                // List of live links. It is dynamic unless you want to create read-only view over nodes.
+
+    NodeEditorPage(const std::string &uuid, const std::string &name) 
+        : m_uuid(uuid)
+        , m_name(name)
+    {
+        config.SettingsFile = nullptr;
+        config.SaveSettings = nullptr;
+        config.LoadSettings = nullptr;
+        EditorContext = ed::CreateEditor(&config);
+    }
+
+    std::string_view Name() const {
+        return m_name;
+    }
+
+    std::string_view Uuid() const {
+        return m_uuid;
+    }
+
+    ~NodeEditorPage() {
+        ed::DestroyEditor(EditorContext);
+        Clear();
+    }
+
+    void Select()
+    {
+        ed::SetCurrentEditor(EditorContext);
+    }
+
+    void Draw() {
+        for (const auto & n : m_nodes)
+        {
+            ImGui::PushID(n->GetInternalId());
+            n->Draw();
+            ImGui::PopID();
+        }
+
+        for (const auto& linkInfo : m_links)
+        {
+            ed::Link(linkInfo->ed_link->Id, linkInfo->ed_link->OutputId, linkInfo->ed_link->InputId);
+        }
+    }
+
+    bool GetNode(const ed::NodeId &nodeId, std::shared_ptr<BaseNodeWidget> &node) {
+        for (const auto & n : m_nodes)
+        {
+            if (n->GetInternalId() == nodeId.Get())
+            {
+                node = n;
+                return true;
+            }
+        }
+        return false;
+    }
+
+    void DeleteNode(const ed::NodeId &nodeId) {
+        m_nodes.remove_if([nodeId](const std::shared_ptr<BaseNodeWidget>& node) {
+            return node->GetInternalId() == nodeId.Get();
+        });
+    }
+
+    std::shared_ptr<BaseNodeWidget> GetSelectedNode() {
+
+        std::shared_ptr<BaseNodeWidget> selected;
+
+        if (ed::GetSelectedObjectCount() > 0)
+        {
+            ed::NodeId nId;
+            int nodeCount = ed::GetSelectedNodes(&nId, 1);
+
+            if (nodeCount > 0)
+            {
+                for (auto & n : m_nodes)
+                {
+                    if (n->GetInternalId() == nId.Get())
+                    {
+                        selected = n;
+                    }
+                }
+            }
+        }
+        return selected;
+    }
+
+    void AddNode(std::shared_ptr<BaseNodeWidget> node) {
+        m_nodes.push_back(node);
+    }
+
+    void Clear() {
+        m_nodes.clear();
+        m_links.clear();
+    }
+
+    bool GetModel(ed::LinkId linkId, std::shared_ptr<Connection> &model) {
+        for (const auto& linkInfo : m_links)
+        {
+            if (linkInfo->ed_link->Id == linkId)
+            {
+                model = linkInfo->model;
+                return true;
+            }
+        }
+        return false;
+    }
+
+    void EraseLink(ed::LinkId linkId) {
+        m_links.remove_if([linkId](const std::shared_ptr<LinkInfo>& linkInfo) {
+            return linkInfo->ed_link->Id == linkId;
+        });
+    }
+
+    // retourne 1 si c'est une sortie, 2 une entrée, 0 pas trouvé
+    int FindNodeAndPin(ed::PinId pinId, int &foundIndex, std::string &foundNodeId)
+    {
+        int success = 0;
+        for (const auto & n : m_nodes)
+        {
+            // std::cout << "---> Node: " << n->Base()->GetId() << std::endl;
+
+            if (n->HasOnputPinId(pinId, foundIndex))
+            {
+                foundNodeId = n->Base()->GetId();
+                success = 1;
+                break;
+            }
+
+            if (n->HasInputPinId(pinId, foundIndex))
+            {
+                foundNodeId = n->Base()->GetId();
+                success = 2;
+                break;
+            }
+        }
+
+        return success;
+    }
+
+    ed::PinId GetInputPin(const std::string &modelNodeId, int pinIndex)
+    {
+        ed::PinId id = 0;
+
+        for (auto & n : m_nodes)
+        {
+            if (n->Base()->GetId() == modelNodeId)
+            {
+                id = n->GetInputPinAt(pinIndex);
+                break;
+            }
+        }
+
+        if (id.Get() == 0)
+        {
+            std::cout << "Invalid Id: " << modelNodeId << " input pin: " << pinIndex <<" not found" << std::endl;
+        }
+
+        return id;
+    }
+
+    ed::PinId GetOutputPin(const std::string &modelNodeId, int pinIndex)
+{
+        ed::PinId id = 0;
+
+        for (auto & n : m_nodes)
+        {
+            if (n->Base()->GetId() == modelNodeId)
+            {
+                id = n->GetOutputPinAt(pinIndex);
+                break;
+            }
+        }
+
+        if (id.Get() == 0)
+        {
+            std::cout << "Invalid Id: " << modelNodeId << " output pin: " << pinIndex <<" not found" << std::endl;
+        }
+
+        return id;
+    }
+
+private:
+    std::string m_uuid;
+    std::string m_name;
+
+};
diff --git a/story-editor/src/node_editor/node_editor_window.cpp b/story-editor/src/node_editor/node_editor_window.cpp
index f36e75b..2cbaf18 100644
--- a/story-editor/src/node_editor/node_editor_window.cpp
+++ b/story-editor/src/node_editor/node_editor_window.cpp
@@ -10,6 +10,7 @@
 #include "IconsFontAwesome5_c.h"
 
 #include "media_node_widget.h"
+#include "function_node_widget.h"
 #include "gui.h"
 #include "uuid.h"
 
@@ -27,71 +28,62 @@ NodeEditorWindow::NodeEditorWindow(IStoryManager &manager)
 {
 
     registerNode<MediaNodeWidget>("media-node");
+    registerNode<FunctionNodeWidget>("function-node");
 }
 
 NodeEditorWindow::~NodeEditorWindow()
 {
-    ed::DestroyEditor(m_context);
+    m_pages.clear();
+    m_story.reset();
 }
 
+static const std::string gMainUuid = "490745ab-df4d-476d-ae27-027e94b8ee0a";
+
 void NodeEditorWindow::Initialize()
 {
-    ed::Config config;
-    config.SettingsFile = nullptr;
-    config.SaveSettings = nullptr;
-    config.LoadSettings = nullptr;
-    m_context = ed::CreateEditor(&config);
+    m_pages.clear();
+    m_callStack.clear();
 
-    ed::SetCurrentEditor(m_context);
+    m_currentPage = std::make_shared<NodeEditorPage>(gMainUuid, "Main");
+    m_pages.emplace_back(m_currentPage);
+  
+    m_currentPage->Select();
 }
 
-void NodeEditorWindow::Clear()
+void NodeEditorWindow::LoadPage(const std::string &uuid, const std::string &name)
 {
-    m_nodes.clear();
-    m_links.clear();
-    m_story.reset();
+    // On cherche la page correspondante dans la std::list
+    // Si elle n'existe pas, c'est une nouvelle fonction
+    auto it = std::find_if(m_pages.begin(), m_pages.end(), [uuid](std::shared_ptr<NodeEditorPage> p) { return p->Uuid() == uuid; });
+
+    std::shared_ptr<NodeEditorPage> page;
+
+    if (it == m_pages.end())
+    {
+        // New page
+        page = std::make_shared<NodeEditorPage>(uuid, name);
+    }
+    else
+    {
+        page = *it;
+    }
+    
+    if (m_currentPage->Uuid() != uuid)
+    {
+        m_callStack.push_back(m_currentPage); // save where we are
+        m_currentPage = page;
+        m_currentPage->Select();
+    }
 }
 
 ed::PinId NodeEditorWindow::GetInputPin(const std::string &modelNodeId, int pinIndex)
 {
-    ed::PinId id = 0;
-
-    for (auto & n : m_nodes)
-    {
-        if (n->Base()->GetId() == modelNodeId)
-        {
-            id = n->GetInputPinAt(pinIndex);
-            break;
-        }
-    }
-
-    if (id.Get() == 0)
-    {
-        std::cout << "Invalid Id: " << modelNodeId << " input pin: " << pinIndex <<" not found" << std::endl;
-    }
-
-    return id;
+    return m_currentPage->GetInputPin(modelNodeId, pinIndex);
 }
 
 ed::PinId NodeEditorWindow::GetOutputPin(const std::string &modelNodeId, int pinIndex)
 {
-    ed::PinId id = 0;
-
-    for (auto & n : m_nodes)
-    {
-        if (n->Base()->GetId() == modelNodeId)
-        {
-            id = n->GetOutputPinAt(pinIndex);
-            break;
-        }
-    }
-
-    if (id.Get() == 0)
-    {
-        std::cout << "Invalid Id: " << modelNodeId << " output pin: " << pinIndex <<" not found" << std::endl;
-    }
-
-    return id;
+    return m_currentPage->GetOutputPin(modelNodeId, pinIndex);
 }
 
 void NodeEditorWindow::Load(std::shared_ptr<StoryProject> story)
@@ -103,8 +95,7 @@ void NodeEditorWindow::Load(std::shared_ptr<StoryProject> story)
         try {
 
             BaseNodeWidget::InitId();
-            m_nodes.clear();
-            m_links.clear();
+            Initialize();
 
             auto [node_begin, node_end] = m_story->Nodes();
 
@@ -117,7 +108,7 @@ void NodeEditorWindow::Load(std::shared_ptr<StoryProject> story)
                 {
                     n->Initialize();
                     n->SetOutputs(m_story->OutputsCount((*it)->GetId())); // il faut que les noeuds aient une bonne taille de outputs avant de créer les liens
-                    m_nodes.push_back(n);
+                    m_currentPage->AddNode(n);
                 }
                 else
                 {
@@ -143,7 +134,7 @@ void NodeEditorWindow::Load(std::shared_ptr<StoryProject> story)
         }
     }
 
-    std::cout << "Loaded " << m_nodes.size() << " nodes, " << m_links.size() << " links" << std::endl;
+    std::cout << "Loaded " << m_currentPage->m_nodes.size() << " nodes, " << m_currentPage->m_links.size() << " links" << std::endl;
   
 }
 
@@ -152,6 +143,12 @@ void NodeEditorWindow::SaveNodePositions()
     
 }
 
+void NodeEditorWindow::OpenFunction(const std::string &uuid, const std::string &name)
+{
+    m_newPageUuid = uuid;
+    m_newPageName = name;
+}
+
 void NodeEditorWindow::CreateLink(std::shared_ptr<Connection> model, ed::PinId inId, ed::PinId outId)
 {
     auto conn = std::make_shared<LinkInfo>();
@@ -164,41 +161,16 @@ void NodeEditorWindow::CreateLink(std::shared_ptr<Connection> model, ed::PinId i
     conn->ed_link->OutputId = outId;
 
     // Since we accepted new link, lets add one to our list of links.
-    m_links.push_back(conn);
+    m_currentPage->m_links.push_back(conn);
 }
 
-// retourne 1 si c'est une sortie, 2 une entrée, 0 pas trouvé
-int NodeEditorWindow::FindNodeAndPin(ed::PinId pinId, int &foundIndex, std::string &foundNodeId)
-{
-    int success = 0;
-    for (const auto & n : m_nodes)
-    {
-        // std::cout << "---> Node: " << n->Base()->GetId() << std::endl;
-
-        if (n->HasOnputPinId(pinId, foundIndex))
-        {
-            foundNodeId = n->Base()->GetId();
-            success = 1;
-            break;
-        }
-
-        if (n->HasInputPinId(pinId, foundIndex))
-        {
-            foundNodeId = n->Base()->GetId();
-            success = 2;
-            break;
-        }
-    }
-
-    return success;
-}
 
 bool NodeEditorWindow::FillConnection(std::shared_ptr<Connection> c, ed::PinId pinId)
 {
     bool success = false;
     std::string nodeId;
     int nodeIndex;
-    int ret = FindNodeAndPin(pinId, nodeIndex, nodeId);
+    int ret = m_currentPage->FindNodeAndPin(pinId, nodeIndex, nodeId);
     if (ret > 0)
     {
         if (ret == 1)
@@ -216,53 +188,13 @@ bool NodeEditorWindow::FillConnection(std::shared_ptr<Connection> c, ed::PinId p
     return success;
 }
 
-/*
-std::shared_ptr<Connection> NodeEditorWindow::LinkToModel(ed::PinId InputId, ed::PinId OutputId)
-{
-    auto c = std::make_shared<Connection>();
-    int foundIndex = -1;
-    for (const auto & n : m_nodes)
-    {
-        // std::cout << "---> Node: " << n->Base()->GetId() << std::endl;
-
-        if (n->HasOnputPinId(OutputId, foundIndex))
-        {
-            c->outNodeId = n->Base()->GetId();
-            c->outPortIndex = foundIndex;
-        }
-
-        if (n->HasInputPinId(InputId, foundIndex))
-        {
-            c->inNodeId = n->Base()->GetId();
-            c->inPortIndex = foundIndex;
-        }
-    }
-
-    return c;
-}*/
-
 
 std::shared_ptr<BaseNodeWidget> NodeEditorWindow::GetSelectedNode()
 {
     std::shared_ptr<BaseNodeWidget> selected;
 
-    ed::SetCurrentEditor(m_context);
-    if (ed::GetSelectedObjectCount() > 0)
-    {
-        ed::NodeId nId;
-        int nodeCount = ed::GetSelectedNodes(&nId, 1);
-
-        if (nodeCount > 0)
-        {
-            for (auto & n : m_nodes)
-            {
-                if (n->GetInternalId() == nId.Get())
-                {
-                    selected = n;
-                }
-            }
-        }
-    }
+    m_currentPage->Select();
+    selected = m_currentPage->GetSelectedNode();
     ed::SetCurrentEditor(nullptr);
 
     return selected;
@@ -271,24 +203,23 @@ std::shared_ptr<BaseNodeWidget> NodeEditorWindow::GetSelectedNode()
 
 void NodeEditorWindow::Draw()
 {
+    if (!m_newPageUuid.empty())
+    {
+        LoadPage(m_newPageUuid, m_newPageName);
+        m_newPageUuid.clear();
+    }
+
     if (WindowBase::BeginDraw())
     {
+        m_currentPage->Select();
 
-        ed::SetCurrentEditor(m_context);
-        ed::Begin("My Editor", ImVec2(0.0, 0.0f));
+        ToolbarUI();
+
+        ed::Begin(m_currentPage->Uuid().data(), ImVec2(0.0, 0.0f));
 
 
-        for (const auto & n : m_nodes)
-        {
-            ImGui::PushID(n->GetInternalId());
-            n->Draw();
-            ImGui::PopID();
-        }
-
-        for (const auto& linkInfo : m_links)
-        {
-            ed::Link(linkInfo->ed_link->Id, linkInfo->ed_link->OutputId, linkInfo->ed_link->InputId);
-        }
+        // Draw our nodes
+        m_currentPage->Draw();
 
         // Handle creation action, returns true if editor want to create new object (node or link)
         if (ed::BeginCreate())
@@ -325,7 +256,7 @@ void NodeEditorWindow::Draw()
                                 CreateLink(c, startId, endId);
 
                                 // Draw new link.
-                                ed::Link(m_links.back()->ed_link->Id, startId, endId);
+                                ed::Link(m_currentPage->m_links.back()->ed_link->Id, startId, endId);
                             }
                         }
                    }
@@ -347,17 +278,16 @@ void NodeEditorWindow::Draw()
             {
                 if (ed::AcceptDeletedItem())
                 {
-                    auto it = std::find_if(m_nodes.begin(), m_nodes.end(), [nodeId](std::shared_ptr<BaseNodeWidget> node) { return node->GetInternalId() == nodeId.Get(); });
-                    if (it != m_nodes.end())
+                    std::shared_ptr<BaseNodeWidget> node;
+                    if (m_currentPage->GetNode(nodeId, node))
                     {
                         // First delete model, then current entry
-                        m_manager.DeleteNode((*it)->Base()->GetId());
-                        m_nodes.erase(it);
+                        m_manager.DeleteNode(node->Base()->GetId());
+                        m_currentPage->DeleteNode(nodeId);
                     }
                 }
             }
 
-
             // There may be many links marked for deletion, let's loop over them.
             ed::LinkId deletedLinkId;
             while (ed::QueryDeletedLink(&deletedLinkId))
@@ -365,13 +295,11 @@ void NodeEditorWindow::Draw()
                // If you agree that link can be deleted, accept deletion.
                if (ed::AcceptDeletedItem())
                {
-
-                    auto it = std::find_if(m_links.begin(), m_links.end(), [deletedLinkId](std::shared_ptr<LinkInfo> inf) { return inf->ed_link->Id == deletedLinkId; });
-                    if (it != m_links.end())
+                    std::shared_ptr<Connection> model;
+                    if (m_currentPage->GetModel(deletedLinkId, model))
                     {
-                        // First delete model, then current entry
-                        m_manager.DeleteLink((*it)->model);
-                        m_links.erase(it);
+                        m_manager.DeleteLink(model);
+                        m_currentPage->EraseLink(deletedLinkId);
                     }
                }
 
@@ -393,18 +321,23 @@ void NodeEditorWindow::Draw()
         if (ImGui::BeginPopup("Create New Node"))
         {
             auto newNodePostion = openPopupPosition;
-            Node* node = nullptr;
-            if (ImGui::MenuItem("Media Node"))
+            std::shared_ptr<BaseNode> base;
+            auto nodeTypes = m_story->GetNodeTypes();
+
+            for (auto &type : nodeTypes)
             {
-                auto base = m_manager.CreateNode("media-node");
-                if (base)
+                if (ImGui::MenuItem(type.c_str()))
                 {
-                    auto n = CreateNodeWidget(base->GetType(), m_manager, base);
-                    if (n)
+                    base = m_manager.CreateNode(type);
+                    if (base)
                     {
-                        n->Base()->SetPosition(newNodePostion.x, newNodePostion.y);
-                        n->Initialize();
-                        m_nodes.push_back(n);
+                        auto n = CreateNodeWidget(type, m_manager, base);
+                        if (n)
+                        {
+                            n->Base()->SetPosition(newNodePostion.x, newNodePostion.y);
+                            n->Initialize();
+                            m_currentPage->AddNode(n);
+                        }
                     }
                 }
             }
@@ -420,7 +353,7 @@ void NodeEditorWindow::Draw()
 
         ed::Resume();
 
-
+        
         ed::End();
         ed::SetCurrentEditor(nullptr);
 
@@ -431,30 +364,49 @@ void NodeEditorWindow::Draw()
 
 void NodeEditorWindow::ToolbarUI()
 {
-    ImGui::SetNextWindowPos(ImVec2(0, 0));
-    ImGui::SetNextWindowSize(ImVec2(42, Gui::GetWindowSize().h));
+    auto& io = ImGui::GetIO();
+    ImVec2 window_pos = ImGui::GetWindowPos();
+    ImVec2 window_size = ImGui::GetWindowSize();
+    ImGuiWindowFlags window_flags = ImGuiWindowFlags_NoDecoration | ImGuiWindowFlags_AlwaysAutoResize | ImGuiWindowFlags_NoFocusOnAppearing | ImGuiWindowFlags_NoNav | ImGuiWindowFlags_NoDocking;
+    // if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+    // {
+    //     const ImGuiViewport* viewport = ImGui::GetWindowViewport();
+    //     window_flags |= ImGuiWindowFlags_NoDocking;
+    //     io.ConfigViewportsNoDecoration = true;
+    //     ImGui::SetNextWindowViewport(viewport->ID);
+    // }
+    ImGui::SetNextWindowBgAlpha(0.35f); // Transparent background
+    // ImGui::PushStyleColor(ImGuiCol_Button, m_StyleColors[BluePrintStyleColor_ToolButton]);
+    // ImGui::PushStyleColor(ImGuiCol_ButtonHovered, m_StyleColors[BluePrintStyleColor_ToolButtonHovered]);
+    // ImGui::PushStyleColor(ImGuiCol_ButtonActive, m_StyleColors[BluePrintStyleColor_ToolButtonActive]);
+    // ImGui::PushStyleColor(ImGuiCol_TexGlyphShadow, ImVec4(0.1, 0.1, 0.1, 0.8));
+    // ImGui::PushStyleVar(ImGuiStyleVar_TexGlyphShadowOffset, ImVec2(2.0, 2.0));
 
-    ImGuiWindowFlags window_flags = 0
-                                    | ImGuiWindowFlags_NoTitleBar
-                                    | ImGuiWindowFlags_NoResize
-                                    | ImGuiWindowFlags_NoMove
-                                    | ImGuiWindowFlags_NoScrollbar
-                                    | ImGuiWindowFlags_NoSavedSettings
-        ;
-    ImGui::PushStyleVar(ImGuiStyleVar_WindowBorderSize, 0);
     ImGui::Begin("TOOLBAR", NULL, window_flags);
-    ImGui::PopStyleVar();
+    // ImGui::PopStyleVar();
 
-    if (ImGui::Button(ICON_FA_COG))
+    // Draw call stack, each function is a button
+    for (auto page : m_callStack)
     {
-        ImGui::OpenPopup("Options");
-    }
+        if (ImGui::Button(page->Name().data()))
+        {
+            // Erase all pages after this iterator
+            auto it = std::find(m_callStack.begin(), m_callStack.end(), page);
+            m_callStack.erase(it, m_callStack.end());
 
-    if (ImGui::Button(ICON_FA_SIGN_OUT_ALT))
-    {
-       // mEvent.ExitGame();
+            LoadPage(page->Uuid().data(), page->Name().data());
+            break;
+        }
+        ImGui::SameLine();
+        ImGui::Text(">");
+        ImGui::SameLine();
     }
 
-
     ImGui::End();
+    // ImGui::PopStyleVar();
+    // ImGui::PopStyleColor(4);
+    if (io.ConfigFlags & ImGuiConfigFlags_ViewportsEnable)
+    {
+        io.ConfigViewportsNoDecoration = false;
+    }
 }
diff --git a/story-editor/src/node_editor/node_editor_window.h b/story-editor/src/node_editor/node_editor_window.h
index 365f048..cbe7ad0 100644
--- a/story-editor/src/node_editor/node_editor_window.h
+++ b/story-editor/src/node_editor/node_editor_window.h
@@ -2,7 +2,7 @@
 
 #include <map>
 #include <set>
-#include <set>
+#include <utility>
 
 #include <imgui_node_editor.h>
 #include "base_node_widget.h"
@@ -10,12 +10,10 @@
 #include "i_story_manager.h"
 #include "json.hpp"
 #include "story_project.h"
-
+#include "node_editor_page.h"
 
 namespace ed = ax::NodeEditor;
 
-
-
 # ifdef _MSC_VER
 # define portable_strcpy    strcpy_s
 # define portable_sprintf   sprintf_s
@@ -26,35 +24,15 @@ namespace ed = ax::NodeEditor;
 
 class NodeEditorWindow  : public WindowBase
 {
-public:
-    struct EditorLink {
-        ed::LinkId Id;
-        ed::PinId  InputId;
-        ed::PinId  OutputId;
-    };
-
-    // Stuff from ImGuiNodeEditor, each element has a unique ID within one editor
-    struct LinkInfo
-    {
-
-        LinkInfo()
-        {
-            ed_link = std::make_shared<EditorLink>();
-            model = std::make_shared<Connection>();
-        }
-
-        std::shared_ptr<EditorLink> ed_link;
-        std::shared_ptr<Connection> model;
-    };
-
+public:   
     NodeEditorWindow(IStoryManager &manager);
     ~NodeEditorWindow();
     virtual void Draw() override;
 
     void Initialize();
-    void Clear();
     void Load(std::shared_ptr<StoryProject> story);
     void SaveNodePositions();
+    void OpenFunction(const std::string &uuid, const std::string &name);
 
     std::shared_ptr<BaseNodeWidget> GetSelectedNode();
 
@@ -63,11 +41,16 @@ private:
 
     bool m_loaded{false};
 
-    ed::EditorContext* m_context = nullptr;
-
+    // "main" is the entry point editor context. You always need to create one.
+    // Then each function can have its own editor context, for example if you want to create multiple graphs.
+    // the key is main, or the UUID of the function
+    std::list<std::shared_ptr<NodeEditorPage>> m_pages;
+    std::shared_ptr<NodeEditorPage> m_currentPage;
+    std::string m_newPageUuid;
+    std::string m_newPageName;
     std::shared_ptr<StoryProject> m_story;
-    std::list<std::shared_ptr<BaseNodeWidget>>   m_nodes;
-    std::list<std::shared_ptr<LinkInfo>>   m_links;                // List of live links. It is dynamic unless you want to create read-only view over nodes.
+    std::list<std::shared_ptr<NodeEditorPage>> m_callStack;
+   
     void ToolbarUI();
 
     void BuildNode(Node* node)
@@ -113,11 +96,10 @@ private:
         }
     }
 
+    void LoadPage(const std::string &uuid, const std::string &name);
     ed::PinId GetInputPin(const std::string &modelNodeId, int pinIndex);
     ed::PinId GetOutputPin(const std::string &modelNodeId, int pinIndex);
     void CreateLink(std::shared_ptr<Connection> model, ed::PinId inId, ed::PinId outId);
-    // std::shared_ptr<Connection> LinkToModel(ed::PinId InputId, ed::PinId OutputId);
-    int FindNodeAndPin(ed::PinId pinId, int &foundIndex, std::string &foundNodeId);
     bool FillConnection(std::shared_ptr<Connection> c, ed::PinId pinId);
 };
 
diff --git a/story-editor/src/node_engine/base_node.cpp b/story-editor/src/node_engine/base_node.cpp
index a60f1ad..11fe0fb 100644
--- a/story-editor/src/node_engine/base_node.cpp
+++ b/story-editor/src/node_engine/base_node.cpp
@@ -2,9 +2,10 @@
 #include "uuid.h"
 #include <iostream>
 
-BaseNode::BaseNode(const std::string &type)
+BaseNode::BaseNode(const std::string &type, const std::string &typeName)
 {
     m_type = type;
+    m_typeName = typeName;
     m_uuid = Uuid().String();
 
     nlohmann::json obj{};
diff --git a/story-editor/src/node_engine/base_node.h b/story-editor/src/node_engine/base_node.h
index 4b42c8d..72cc4ea 100644
--- a/story-editor/src/node_engine/base_node.h
+++ b/story-editor/src/node_engine/base_node.h
@@ -17,7 +17,7 @@ public:
         float y;
     };
 
-    BaseNode(const std::string &type);
+    BaseNode(const std::string &type, const std::string &typeName);
     virtual ~BaseNode();
 
     static std::string GetEntryLabel(const std::string &id);
@@ -32,11 +32,18 @@ public:
     virtual float GetX() const;
     virtual float GetY() const;
 
+    // Coded type, internal use
     std::string GetType() const
     {
         return m_type;
     }
 
+    // Human readable type
+    std::string GetTypeName() const
+    {
+        return m_typeName;
+    }
+
     void SetId(const std::string &id) { m_uuid = id; }
     std::string GetId() const { return m_uuid; }
 
@@ -54,6 +61,7 @@ public:
 private:
     std::string m_title{"Default title"};
     std::string m_type;
+    std::string m_typeName;
     std::string m_uuid;
     NodePosition m_pos;
 
diff --git a/story-editor/src/node_engine/function_node.cpp b/story-editor/src/node_engine/function_node.cpp
new file mode 100644
index 0000000..3ae7065
--- /dev/null
+++ b/story-editor/src/node_engine/function_node.cpp
@@ -0,0 +1,43 @@
+#include "function_node.h"
+#include "story_project.h"
+#include "connection.h"
+#include "sys_lib.h"
+
+
+FunctionNode::FunctionNode(const std::string &type)
+    : BaseNode(type, "Function Node")
+{
+    nlohmann::json j{ {"function", ""} };
+    SetInternalData(j);
+}
+
+void FunctionNode::StoreInternalData()
+{
+    nlohmann::json j;
+    // j["image"] = m_image;
+    // j["sound"] = m_sound;
+
+    SetInternalData(j);
+}
+
+void FunctionNode::Initialize()
+{
+    nlohmann::json j = GetInternalData();
+    // m_image = j["image"].get<std::string>();
+    // m_sound = j["sound"].get<std::string>();
+}
+
+std::string FunctionNode::Build(IStoryProject &story, int nb_out_conns)
+{
+    return std::string();
+}
+
+std::string FunctionNode::GenerateConstants(IStoryProject &story, int nb_out_conns)
+{
+    std::string s;
+
+
+
+    return s;
+}
+
diff --git a/story-editor/src/node_engine/function_node.h b/story-editor/src/node_engine/function_node.h
new file mode 100644
index 0000000..64cb32a
--- /dev/null
+++ b/story-editor/src/node_engine/function_node.h
@@ -0,0 +1,23 @@
+#pragma once
+
+#include <string>
+#include "i_story_manager.h"
+#include "base_node.h"
+#include "i_script_node.h"
+#include "i_story_project.h"
+
+class FunctionNode : public BaseNode
+{
+public:
+    FunctionNode(const std::string &type);
+
+    virtual void Initialize() override;
+    virtual std::string Build(IStoryProject &story, int nb_out_conns) override;
+    virtual std::string GenerateConstants(IStoryProject &story, int nb_out_conns) override;
+
+    void StoreInternalData();
+
+private:
+
+};
+
diff --git a/story-editor/src/node_engine/media_node.cpp b/story-editor/src/node_engine/media_node.cpp
index 81d729f..905139f 100644
--- a/story-editor/src/node_engine/media_node.cpp
+++ b/story-editor/src/node_engine/media_node.cpp
@@ -11,7 +11,7 @@ static std::string ChoiceLabel(const std::string &id)
 }
 
 MediaNode::MediaNode(const std::string &type)
-    : BaseNode(type)
+    : BaseNode(type, "Media Node")
 {
     nlohmann::json j{ {"image", ""}, {"sound", ""}};
     SetInternalData(j);