diff --git a/demos/form/form.php b/demos/form/form.php
index ffc21449a8..46bd95ffb4 100644
--- a/demos/form/form.php
+++ b/demos/form/form.php
@@ -80,6 +80,7 @@
 $form->onSubmit(function (Form $form) {
     $message = 'field = ' . print_r($form->model->get('field'), true) . '; <br> control = ' . print_r($form->model->get('control'), true);
     $view = new Message('Date field vs control:');
+    $view->setApp($form->getApp());
     $view->invokeInit();
     $view->text->addHtml($message);
 
@@ -112,6 +113,7 @@
 $form->buttonSave->set('Save3');
 $form->onSubmit(function (Form $form) {
     $view = new Message('some header');
+    $view->setApp($form->getApp());
     $view->invokeInit();
     $view->text->addParagraph('some text ' . random_int(1, 100));
 
@@ -124,6 +126,7 @@
 $form->buttonSave->set('Save4');
 $form->onSubmit(function (Form $form) {
     $view = new Message('some header');
+    $view->setApp($form->getApp());
     $view->invokeInit();
     $view->text->addParagraph('some text ' . random_int(1, 100));
 
diff --git a/docs/app.rst b/docs/app.rst
index 56c5032286..a07f283009 100644
--- a/docs/app.rst
+++ b/docs/app.rst
@@ -9,10 +9,8 @@ Purpose of App class
 .. php:namespace:: Atk4\Ui
 .. php:class:: App
 
-App is a mandatory object that's essential for Agile UI to operate. If you don't create App object explicitly, it
-will be automatically created if you execute `$component->invokeInit()` or `$component->render()`.
-
-In most use-scenarios, however, you would create instance of an App class yourself before other components::
+App is a mandatory object that's essential for Agile UI to operate. You should create instance
+of an App class yourself before other components::
 
     $app = new \Atk4\Ui\App('My App');
     $app->initLayout([\Atk4\Ui\Layout\Centered::class]);
diff --git a/docs/overview.rst b/docs/overview.rst
index 9757237beb..da83f2c49b 100644
--- a/docs/overview.rst
+++ b/docs/overview.rst
@@ -228,6 +228,7 @@ of application layout with a line::
 To render a component individually and get the HTML and JavaScript use this format::
 
     $form = new Form();
+    $form->setApp($app);
     $form->invokeInit();
     $form->setModel(new User($db));
 
diff --git a/src/View.php b/src/View.php
index 61ff0c2e34..9339ed9007 100644
--- a/src/View.php
+++ b/src/View.php
@@ -505,9 +505,7 @@ public function removeAttr($property)
     public $stickyArgs = [];
 
     /**
-     * Build an URL which this view can use for js call-backs. It should
-     * be guaranteed that requesting returned URL would at some point call
-     * $this->invokeInit().
+     * Build an URL which this view can use for JS callbacks.
      *
      * @param array $page
      */
@@ -517,9 +515,7 @@ public function jsUrl($page = []): string
     }
 
     /**
-     * Build an URL which this view can use for call-backs. It should
-     * be guaranteed that requesting returned URL would at some point call
-     * $this->invokeInit().
+     * Build an URL which this view can use for callbacks.
      *
      * @param string|array $page URL as string or array with page name as first element and other GET arguments
      */