Accessibility request: alternative to scroll wheel for changing the selection of a spell book, abacus, etc.

[Twisted-Code]

as I explained on discord, scroll wheel controls can be difficult for people with disabilities such as my own. In my case, I have a spinal cord injury, and both standard gaming mice and physical keyboards are... difficult... for me to interface with. I have a trackball mouse, and use virtual alternatives for keyboard functions (for instance, Dragon NaturallySpeaking for typing, and Windows's On-Screen Keyboard, \system32\osk.execomment for controlling Steve). Neither of these options provide a physical or virtual scroll wheel, so I would have to further work around it in something like AutoHotkey (to rebind the -/= keys, for example, to the mouse wheel as a virtual hotkey) or pull in another input source (but I would still have to use AutoHotkey to forward the joystick control I have).

In any case, could you please make it possible to rebind the mouse wheel controls to something else? I have a few possible controls in mind (mentioned in the parentheses above) that I would like to use, but I presume, given I don't see it in the Keybinds menu, that the current mouse wheel control is hardcoded so I can't use either of them.