The prime purpose of the KatMouse utility is to enhance the functionality of mice with a scroll wheel, offering universal scrolling: moving the mouse wheel will scroll the window directly beneath the mouse cursor (not the one with the keyboard focus, which is default on Windows...
























































You can only translate mouse button presses to keyboard keys, no combinations, macros and Fn keys can't be used as modifiers nor modifiers to what you click, eg: can't map alt+wheel_up to volume up.