Quick Look Key features
If you’re someone who keeps files on your desktop, the ability to move windows out of the way to reach them in an instant will save you laboriously closing them or moving things around.
The Application Windows action shows you a Mission Control-like view of all open windows from just the app you’re currently using. This is great if you’re working on multiple Numbers spreadsheets, say!
Disable Scren Saver
Doing a presentation that focuses on one slide for a long time, or streaming a film/watching a video? Avoid awkward moments by using the Disable Screen Saver action to ensure your screen doesn’t go to sleep.