mwheel-scroll

mwheel-scroll is an interactive compiled Lisp function in `mwheel.el'.

It is bound to <C-mouse-5>, <S-mouse-5>, <mouse-5>, <C-mouse-4>, <S-mouse-4>, <mouse-4>.

(mwheel-scroll EVENT)

Scroll up or down according to the EVENT.
This should only be bound to mouse buttons 4 and 5.