How to activate additional preferences on your MacBook ?

- Please watch the upper ☝︎ video carefully and follow the steps. (in case the video doesn't work, press on this link) 
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There are many additional preferences and features in your MacBook that can be activated using a free simple application instead of writing terminal commands, for example:
1- you can add small or large space separators between DOCK icons.
2- You can activate the "dark mode" while leaving certain folders or apps to work as in light mode. - Restrict dark mode to menu bar and dock
3- you can show/ hide system files.
4- you can change the layout of launchpad.
5- you can force your Mac to save the screenshots in the desired format like JPEG, PDF, TIFF, TIF, BMP, GIF, PSD, and TGA.
6- Disable crash reports.
7- Change the fonts types and sizes of your macOS.
8- other options.
9- Restore system preferences to its default by one click.