Documentation update, updated info on the AI Tools page of Manual (#3532)

* updated the AI Tools page

* rename image, delete unused

* updated the interactors subsection

* added info about selected opacity slider to OpenCV tools and polygon manual drawing

* updated info about selected opacity slider in the objects sidebar section

site/content/en/docs/manual/advanced/ai-tools.md

@@ -20,15 +20,18 @@ Negative points should be placed outside the boundary of the object.
 In most cases specifying positive points alone is enough to build a polygon.
 A list of available out-of-the-box interactors is placed below.
 
-- Before you start, select the magic wand on the controls sidebar and go to the `Interactors` tab.
-  Then select a label for the polygon and a required DL model.
+- Before you start, select the `magic wand` on the controls sidebar and go to the `Interactors` tab.
+  Then select a label for the polygon and a required DL model. To view help about each of the
+  models, you can click the `Question mark` icon.
 
-  ![](/images/image114.jpg)
+  ![](/images/image114_detrac.jpg)
 
-- Click `Interact` to enter the interaction mode. Now you can place positive and/or negative points.
+- Click `Interact` to enter the interaction mode. Depending on the selected model,
+  the method of markup will also differ.
+  Now you can place positive and/or negative points. The [IOG](#inside-outside-guidance) model also uses a rectangle.
   Left click creates a positive point and right click creates a negative point.
-  `Deep extreme cut` model requires a minimum of 4 points. After you set 4 positive points,
-  a request will be sent to the server and when the process is complete a polygon will be created.
+  After placing the required number of points (the number is different depending on the model),
+  the request will be sent to the server and when the process is complete a polygon will be created.
   If you are not satisfied with the result, you can set additional points or remove points.
   To delete a point, hover over the point you want to delete, if the point can be deleted,
   it will enlarge and the cursor will turn into a cross, then left-click on the point.
@@ -41,6 +44,9 @@ A list of available out-of-the-box interactors is placed below.
 
   ![](/images/image224.jpg)
 
+- You can use the `Selected opacity` slider in the `Objects sidebar` to change the opacity of the polygon.
+  You can read more in the [Objects sidebar](/docs/manual/basics/objects-sidebar/#appearance) section.
+
 - To finish interaction, click on the `Done` button on the top panel or press `N` on your keyboard.
 
 - When the object is finished, you can edit it like a polygon.

site/content/en/docs/manual/advanced/annotation-with-polygons/manual-drawing.md

@@ -20,6 +20,8 @@ Before starting, you need to select `Polygon` on the controls sidebar and choose
 - When `Shift` isn't pressed, you can zoom in/out (when scrolling the mouse
   wheel) and move (when clicking the mouse wheel and moving the mouse), you can also
   delete the previous point by right-clicking on it.
+- You can use the `Selected opacity` slider in the `Objects sidebar` to change the opacity of the polygon.
+  You can read more in the [Objects sidebar](/docs/manual/basics/objects-sidebar/#appearance) section.
 - Press `N` again or click the `Done` button on the top panel for completing the shape.
 - After creating the polygon, you can move the points or delete them by right-clicking and selecting `Delete point`
   or clicking with pressed `Alt` key in the context menu.

site/content/en/docs/manual/advanced/opencv-tools.md

@@ -41,6 +41,9 @@ displayed as a red square which is tied to the cursor.
 
   ![](/images/image224.jpg)
 
+- You can use the `Selected opacity` slider in the `Objects sidebar` to change the opacity of the polygon.
+  You can read more in the [Objects sidebar](/docs/manual/basics/objects-sidebar/#appearance) section.
+
 - Once all the points are placed, you can complete the creation of the object
   by clicking on the `Done` button on the top panel or press `N` on your keyboard.
   As a result, a polygon will be created (read more about the polygons in the [annotation with polygons](/docs/manual/advanced/annotation-with-polygons/)).

site/content/en/docs/manual/basics/objects-sidebar.md

@@ -149,7 +149,8 @@ Change the opacity of every shape in the annotation.
 
 **Selected Fill Opacity** slider
 
-Change the opacity of the selected object's fill.
+Change the opacity of the selected object's fill. It is possible to change opacity while drawing an object in the case
+of rectangles, polygons and cuboids.
 
 ![](/images/image089_detrac.jpg)