Am I right that the flat orange sections in the filmic curve (as shown in the image below) indicate that shadows and highlights are clipping?
The reason I’m unsure is that it doesn’t always seem to match the over/under exposure toggle. As you can see from below, the filmic curve shows no clipping, but the over/under exposure toggle shows a lot of clipping in highlights and shadows, even when the thresholds are set to 0% and 100%
Clipping in filmic happens because of bad choices of white and black relative exposure.
The clipping of the curve, as shown in the graph, only means that your look tone curve is non-monotonous, which can induce local contrast inversion in some parts and possibly clipping too, but it’s not the major reason.
non-monotonous => not strictly monotonic 
Ok, so the filmic clipping indicators do not correspond exactly to the over/under exposure toggle indicators. So, my takeaway from this is that:
Would this be right?
Btw, I love what you’ve been doing with filmic and your contributions to darktable in general. It’s really enjoyable to use and I’m getting great results from it. I’ve also learned so much from your videos. I’ll be setting up a donation…
Exactly. 
Always appreciated, thanks !
