Update documentation. Added information about pop-up messages (#4316)

* update interface.md

* fix mistakes

* fix mistake

site/content/en/docs/manual/basics/interface.md

@@ -3,14 +3,53 @@ title: 'Interface of the annotation tool'
 linkTitle: 'Interface'
 weight: 5
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+
+## Main user interface
+
 The tool consists of:
 
 - `Header` - pinned header used to navigate CVAT sections and account settings;
-- `Top panel` — contains navigation buttons, main functions and menu access;
-- `Workspace` — space where images are shown;
-- `Controls sidebar` — contains tools for navigating the image, zoom,
-  creating shapes and editing tracks (merge, split, group)
-- `Objects sidebar` — contains label filter, two lists:
+
+- [`Top panel`](/docs/manual/basics/top-panel/) — contains navigation buttons, main functions and menu access;
+
+- [`Workspace`](/docs/manual/basics/workspace/) — space where images are shown;
+
+- [`Controls sidebar`](/docs/manual/basics/controls-sidebar/) — contains tools for navigating the image, zoom,
+  creating shapes and editing tracks (merge, split, group);
+
+- [`Objects sidebar`](/docs/manual/basics/objects-sidebar/) — contains label filter, two lists:
   objects (on the frame) and labels (of objects on the frame) and appearance settings.
 
 ![](/images/image034_detrac.jpg)
+
+## Pop-up messages
+
+![Pop-up message](/images/pop-up_message.jpg)
+
+In CVAT, you'll receive pop-up messages in the upper-right corner, on any page.
+Pop-up messages can contain useful information, links, or error messages.
+
+### Information message
+
+Informational messages inform about the end of the auto-annotation process.
+[Learn more about auto-annotation](/docs/manual/advanced/automatic-annotation/).
+
+### Jump Suggestion Messages
+
+#### Open a task
+
+After creating a task, you can immediately open it by clicking `Open task`.
+[Learn more about creating a task](/docs/manual/basics/creating_an_annotation_task/).
+
+#### Continue to the frame on which the work on the job is finished
+
+When you open a job that you previously worked on, you will receive pop-up messages with a proposal
+to go to the frame that was visited before closing the tab.
+
+### Error Messages
+
+If you perform impossible actions, you may receive an error message.
+The message may contain information about the error
+or a prompt to open the browser console (shortcut `F12`) for information.
+If you encounter a bug that you can't solve yourself,
+you can [create an issue on GitHub](https://github.com/openvinotoolkit/cvat/issues/new).