diff --git a/src/Ation.js b/src/Ation.js
index 18e85aa..43852cb 100644
--- a/src/Ation.js
+++ b/src/Ation.js
@@ -1,17 +1,21 @@
 "use strict";
-const {app, protocol} = require("electron");
-const url             = require("url");
-const path            = require("path");
+const {app, protocol, dialog} = require("electron");
+const path                    = require("path");
+const fs                      = require("fs/promises");
 
 const WindowManager = require("./WindowManager");
+const MainMenu      = require("./MainMenu");
+const {parser}      = require("./Parser");
 
 class Ation {
 	windowManager;
+	mainMenu;
 
 	constructor() {
 		if (Ation.Instances > 0)
 			throw new Error("Only one Instance of Ation possible");
-		this.windowManager = new WindowManager();		
+		this.windowManager = new WindowManager(this);
+		this.mainMenu      = new MainMenu(this);
 
 		app.whenReady().then(async () => {
 			protocol.registerFileProtocol("slideimg", (request, callback) => {
@@ -23,6 +27,30 @@ class Ation {
 			});
 		});
 	}
+
+	async openFile() {
+			if (!this.windowManager.mainWindow)
+				return null;
+
+			const result = await dialog.showOpenDialog(this.mainWindow, {
+				title   : "open file",
+				filters : [
+					{
+						name       : "Markdown files",
+						extensions : [".md"]
+					}
+				]
+			});
+
+			if (result.canceled || result.filePaths.length < 1)
+				return null;
+
+			const fileContents = await fs.readFile(result.filePaths[0], {encoding : "utf-8"});
+			const basePath     = path.dirname(result.filePaths[0]);
+			const data         = parser(fileContents);
+
+			return [basePath, data];
+	}
 }
 Ation.Instances = 0;
 
diff --git a/src/WindowManager.js b/src/WindowManager.js
index e7eee28..11a6967 100644
--- a/src/WindowManager.js
+++ b/src/WindowManager.js
@@ -1,46 +1,24 @@
 "use strict";
 
-const {app, BrowserWindow, ipcMain, dialog} = require("electron");
-const path                                  = require("path");
-const fs                                    = require("fs/promises");
-const util                                  = require("util");
+const {app, BrowserWindow, ipcMain, dialog, Menu} = require("electron");
+const path                                        = require("path");
+const fs                                          = require("fs/promises");
+const util                                        = require("util");
 
 const {isDevelopment} = require("./Util");
-const {parser}        = require("./Parser");
 
 class WindowManager {
 	mainWindow;
 	windows;
 
-	constructor() {
+	constructor(parent) {
+		this.app        = parent;
 		this.mainWindow = null;
 		this.windows    = [];
 
 		app.whenReady().then(() => this.init());
 
-		ipcMain.handle("WindowManager::openFile", async () => {
-			if (!this.mainWindow)
-				return null;
-
-			const result = await dialog.showOpenDialog(this.mainWindow, {
-				title   : "open file",
-				filters : [
-					{
-						name       : "Markdown files",
-						extensions : [".md"]
-					}
-				]
-			});
-
-			if (result.canceled || result.filePaths.length < 1)
-				return null;
-
-			const fileContents = await fs.readFile(result.filePaths[0], {encoding : "utf-8"});
-			const basePath     = path.dirname(result.filePaths[0]);
-			const data         = parser(fileContents);
-
-			return [basePath, data];
-		});
+		ipcMain.handle("WindowManager::openFile", async () => this.app.openFile());
 	}
 
 	init() {
@@ -53,7 +31,7 @@ class WindowManager {
 		if (isDevelopment())
 			this.mainWindow.loadURL("http://localhost:3000");
 		else
-			this.mainWindow.loadFile(`file://${path.join(__dirname, "ui", "build", "index.html")}`);
+			this.mainWindow.loadURL(`file://${__dirname}/ui/build/index.html`);
 	}
 
 	static _CreateWindow(options = null, parent = null) {
@@ -61,6 +39,7 @@ class WindowManager {
 			width          : 800,
 			height         : 600,
 			show           : false,
+			devTools       : isDevelopment(),
 			webPreferences : {
 				contextIsolation : true,
 				preload          : path.join(__dirname, "..", "contextAPI.js")