This feature lets you use All keyboard shortcuts for MAC and Windows.
How it works:
Press ESC and you will be able to see all the shortcut command which you can use on your device.
Use keyboard shortcuts to get around quickly. Shortcuts allow you to use the mouse less often while navigating multiple workplaces and channels or managing messages and files.
These will help you get around the useful features quickly and easily on your Mac and PC without switching between keyboard and mouse frequently to save your time.