Because some mice have a secondary scroll wheel, or the scroll wheel can tilt to scroll sideways
I had a Logitech MX Ergo mouse that allegedly had horizontal scrolling. The wheel could tilt left and right which clicked like a button, and the screen would scroll very very slightly to the side. Worst trackball I've ever had.
Just before they stopped making PCs, I saw an IBM computer with a mouse that had one of their Thinkpad clits instead of a scroll wheel. So a proper XY input. I think a blackberry ball would work too.
the scroll wheel can tilt to scroll sideways
I use these for switching tabs in browsers/IDEs by remapping them to Ctrl+Tab and Ctrl+Shift+Tab using Input Remapper
Because some mice have a secondary scroll wheel, or the scroll wheel can tilt to scroll sideways
I had a Logitech MX Ergo mouse that allegedly had horizontal scrolling. The wheel could tilt left and right which clicked like a button, and the screen would scroll very very slightly to the side. Worst trackball I've ever had.
Just before they stopped making PCs, I saw an IBM computer with a mouse that had one of their Thinkpad clits instead of a scroll wheel. So a proper XY input. I think a blackberry ball would work too.
I use these for switching tabs in browsers/IDEs by remapping them to Ctrl+Tab and Ctrl+Shift+Tab using Input Remapper