I am wondering if it's possible to set up a keyboard shortcut to send mouse scrolls to the active window using for example AutoHotkey. I found this thread in the AutoHotkey official forum, but I believe it only sends scrolling commands to the window under the mouse (i.e. which, if I understand correctly, it's not necessarily the active window).
I'm thinking of using the Menu Key on my keyboard to do this, e.g.:
Menu Key + a -> Scroll up the active window Menu Key + z -> Scroll down the active window