Opacity
Opacity allows you to adjust the window transparency easily using the toolbar slider or hotkey.
It also comes with these additional functions: 
. More about it later.
Hotkey
- To enable opacity mode (
) the default hotkey is ALT + A
How to change the default hotkey (ALT + A)
Open the toolbar page in the settings:
Tray icon (
) –> Settings –> All Settings –> Toolbar tab (
)
Changing the default opacity level
The default opacity level is 75%.
To change it, go to Tray icon () –> Settings –> All Settings –> Opacity tab.
Functions
The opacity also comes with additional functions: 
Enable click-through (
)
When enabled, the window will become non-interactable – any mouse/keyboard inputs will pass through to the underlying window below.
Hotkeys for click-through:
- To enable
via hotkey, you must configure it under the [Advanced hotkey settings].
The action is:
- You can also configure hotkeys for these actions:
Disable when the mouse is above the window (
)
When enabled, the opacity will be temporarily disabled when the mouse is above the window
(*Default)
You can enable this option by default via the Tray icon () –> Settings –> All Settings –> Opacity tab.
See the demonstration above (under Changing the default opacity level)
how do you make it permanent , the opacity,when i close and open the adjusted app , the effect goes away