diff --git a/scripts/actions/tabs.js b/scripts/actions/tabs.js
index 936e2ad..2fde241 100644
--- a/scripts/actions/tabs.js
+++ b/scripts/actions/tabs.js
@@ -1,12 +1,8 @@
 import Tabs from "/scripts/GUI/tabs.js";
-import Entry_Manager from "/scripts/external/entries/manager.js"
+import EntryManager from "/scripts/external/entries/manager.js"
 
 export default class Watcher_Tabs {
      constructor () {
-          new Entry_Manager();
-          Tabs.addActionListener(`update`, this.check);
+          new EntryManager();
      };
-
-     check(data) {
-     }
 }
\ No newline at end of file
diff --git a/scripts/external/entries/manager.js b/scripts/external/entries/manager.js
new file mode 100644
index 0000000..e81913f
--- /dev/null
+++ b/scripts/external/entries/manager.js
@@ -0,0 +1,49 @@
+// Manage all entries. 
+
+import {read} from '../../secretariat.js';
+import Tabs from "/scripts/GUI/tabs.js";
+import MenuEntry from "./menu.js";
+import ManagedSidebar from "./sidebar.js";
+import IconIndicator from "./icons.js";
+import filters from '../../filters.js';
+
+export default class EntryManager {
+     constructor () {
+          this.instances = {};
+          this.instances.menu = new MenuEntry();
+          Tabs.addActionListener(`onActivated`, (data) => {this.check(data)});
+     }
+
+     async check(data) {
+          console.error(JSON.stringify(data));
+          ((data != null && (typeof data).includes(`obj`)) ? ((data.tab) ? data.tab.url : false) : false) 
+			? (!!await ((new filters).select(data.tab.url)))
+				? (this.enable())
+				: (this.disable())
+			: false;
+     }
+
+     /* 
+     Enable the entries. 
+     */
+     enable () {
+          this.instances.menu.enable();
+          IconIndicator.enable();
+
+          // Open the side panel, if supported. 
+		read([`settings`,`behavior`,`autoOpen`]).then((result) => {
+			result = (result == null) ? false : result;
+			if (result) {
+				new ManagedSidebar();
+			}
+		});
+     }
+
+     /* 
+     Disable the entries and the existing opened side panel. 
+     */
+     disable () {
+          this.instances.menu.disable();
+          IconIndicator.disable();
+     }
+}
\ No newline at end of file
diff --git a/scripts/external/entries/menu.js b/scripts/external/entries/menu.js
new file mode 100644
index 0000000..845debd
--- /dev/null
+++ b/scripts/external/entries/menu.js
@@ -0,0 +1,27 @@
+import Menu from '/scripts/GUI/context_menus.js';
+import texts from "/scripts/strings/read.js";
+import ManagedSidebar from "./sidebar.js";
+
+export default class MenuEntry {
+     /* Create all entries. */
+	constructor() {
+		// Add the context menu.
+		this.menu = new Menu({title: (new texts(`entry_contextMenu`)).localized, contexts: [`all`], event: {"onClicked": MenuEntry.onclick}, hidden: true});
+	};
+
+     /* 
+	Enable the sidebar. 
+	*/
+	enable () {
+		this.menu.show();
+	}
+
+	/* Disable. */
+	disable () {
+		this.menu.remove();
+	}
+
+	static onclick() {
+		new ManagedSidebar();
+	};
+}
\ No newline at end of file
diff --git a/scripts/external/entries/sidebar.js b/scripts/external/entries/sidebar.js
new file mode 100644
index 0000000..8de51f0
--- /dev/null
+++ b/scripts/external/entries/sidebar.js
@@ -0,0 +1,12 @@
+import Sidebar from '/scripts/GUI/sidepanel.js'
+
+export default class ManagedSidebar {
+     constructor () {
+          // WIP
+          console.warn(`hello world`);
+     }
+
+     manage() {
+          
+     }
+}
\ No newline at end of file