> On thinkpads you can press the middle mouse button (below the spacebar) then press the trackpoint up or down.
Yep, and you can also click and release the middle mouse button, then separately mouse up or down. Interestingly, I have only been able to get either this OR the press then scroll behavior you described working on Windows (by toggling a setting), but in Linux you can have both enabled at the same time.
Bizarrely, Linux seems to support much of the trackpoint/trackpad stuff on thinkpads better than Windows does. I use to not be able to configure the trackpad how I wanted on Windows, but the Synaptics driver for Linux gave me plenty of possibilities.
Yep, and you can also click and release the middle mouse button, then separately mouse up or down. Interestingly, I have only been able to get either this OR the press then scroll behavior you described working on Windows (by toggling a setting), but in Linux you can have both enabled at the same time.