This submenu contains commands to manage child windows of the application.
See the image below:

Let’s consider menu items and their purpose (top-down):
| Cascade | Arranges opened test editing dialog boxes by cascade. |
| Tile Horizontal | Arranges opened test editing dialog boxes by tile horizontally. |
| Tile Vertical | Arranges opened test editing dialog boxes by tile vertically. |
| Minimize All | Minimizes all opened test editing dialog boxes. |
| List of Opened Tests | Shows a list of opened test editing dialog boxes with marking of the current one. |
Also, you can use Window toolbar.