The nub around the G-B-H keys that doesn't really move but responds to pressure and lets you fly the mouse cursor around the screen with various speeds. Lenovo, Dell, HP, Fujitsu and many others equipped their business laptops with such a pointing device.
And notably as touchpads have improved, most of the makers have stopped including TrackPoints. Lenovo is the main holdout.
Still waiting for Framework to introduce a keyboard with a trackpoint included, but apparently the room allocated for the keyboard is too thin for it to be possible.