SF Symbols

SF Symbols is Apple's library of interface icons designed to work alongside system text. Each symbol has a name, which apps can use to select a recognizable image. The set available on a Mac depends on its installed operating system. Apple’s SF Symbols reference

BetterDisplay uses these symbols for customizable menu, display and group icons. In the shared symbol picker, you can search the installed library and choose a symbol instead of remembering its name.

The icon is a visual label. Choosing a different one does not change the display's capabilities or the group's behavior.