What are those symbols shown in menus on Mac?
Many app menus on your Mac show key combinations, such as , next to certain menu options. The symbols in the key combinations represent special keyboard keys, called modifier keys.
You can press the key combinations shown in menus to perform actions without opening the menus.
If you turn on Sticky Keys in Accessibility settings, the Command, Shift, Option, and Control key symbols are shown on the screen when you press those keys. To set this option, choose Apple menu > System Settings, click Accessibility in the sidebar, click Keyboard on the right, then turn on Sticky Keys. (You may need to scroll down.)