Unveil hidden macOS (OS X) features
Mr.W 
Are you a first-time Mac user? Then you undoubtedly know that you could always activate a slow motion effect under macOS, even in OS X in the early days.
For example, this allows you to start an application slowly or open the launchpad super slow. Since macOS Sequoia, Apple has disabled this effect, but with a terminal command you can turn it back on.
Sidecar lets you extend your workspace by using your iPad as a second Mac display. All the ins and outs about SideCar are explained in this Apple document. Unfortunately not all Macs are compatible for this feature, but there is a workaround that might enable Sidecar. With the use of a terminal command you can use all Macs that can install macOS Catalina for side car. But be aware, it doesn’t always work, but it is worth trying.
Did you know that you can fully customize the layout of Launchpad? Not only change the placement of icons, but you can also change the number of rows and columns. Use the following commands in OS X Terminal.
Nothing is more annoying that Photos will opens automatically when you connect an iPhone, iPad or other devices to your Mac. Use the following command in Terminal to change this and prevent Photos from opening automatically.
Did you know you can add the Quit option to the Finder’s application menu? This allows you to easily quit the application. After quitting you can restart Finder by clicking on the Finder icon in the Dock.
In macOS and OS X it’s possible to show one application at a time. You can enable a ‘single application’ mode by entering the following command in Terminal:
