Some programs (e.g. ms html help viewer) have zoom-in features that only seem to work when you mouse wheel scroll.
Is there a way to emulate mouse wheel scroll using the keyboard?
Mkey (http://www.seriosoft.org/en/index.php ) does the job quite well.
This is much easier than making AutoHotKey scripts. TIP: If scroll doesn't work after making "scroll hotkey" try to change default scroll speed setting from "1" to "2".
(Assuming Windows): Check out AutoHotKey, it can remap the Mouse Wheel.
From the docs:
Mouse Wheel Hotkeys [Windows NT/2000/XP or later]
Hotkeys that fire upon turning the mouse wheel are supported via the key names WheelDown and WheelUp. WheelLeft and WheelRight are also supported in v1.0.48+, but have no effect on operating systems older than Windows Vista.