keyboard/mouse mapping for opacity control

[Rene]

Is there a way to invert the "axis" of the mouse? What I mean, or what I do:
I map a key e.g. "Q" to the opacity of a layer and click on mouse y-axis. But when I move the mouse up (along the y-axis) the opacity decreases (instead increase) and vice versa. Is it possible to invert? - Hope it's clear what I mean.
(I've tried to make some changes in the mapping.xml, but without success)

[Joris]

Hey Rene

Good thought. As usual, we'll bounce it around the office, and if feasible, we'll add it as a feature. I suspect this one shouldn't be too hard.

Joris