manage display page of a given content type, you can choose between various display settings. The most commons are "teaser" and "default" or "full content".
However, there's also a "token" display mode (disabled by default). I assume it's added by the token contrib module, but I have no idea what its purpose is and how we're supposed to take advantage of it?
Also: is it typically used somewhere that I'm not aware of? Can it be safely deleted if it's not activated?