Things you want to improve in ART?

Are negative values clamped before CTL scripts (ART 1.25.11)?
I was trying to visualize the negative values with a script ( pratically if rgb<0 , 1 else 0) but the display is always black.
check negative3.txt (1.5 KB)

In the following image I expect a lot of negative values

Probably there’s something very wrong with my script.