Equivalent of Toe node in Fusion to adjust the black point

Hi, I use the Toe node to adjust the black points in Nuke, what's the equivalent in Fusion?
I need to act only on the values closer to 0 with a smooth fall off.

In the ColorCurves node, you can firstly click the curve to add one or more control points. I make a first control point to fix the curve, and then add a second control point which can be used to just adjust the curve at the toe. Is that what you're looking for?

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The Toe node in Nuke has a specific implementation that is cumbersome to recreate as a manual curve.



Two alternative solutions are listed here: https://www.steakunderwater.com/wesuckless/viewtopic.php?f=16&t=4119