Thanks for your replies (and in particular to David with his reference to the Adobe paper).
And maybe I didn't explain myself clearly, but what I was looking for was not under the "Camera Calibration" tab, but under the "Lens Corrections" one.
So, when developing a RAW (.RAF) file taken with a Fuji X camera equipped with a Fujinon lens, the type of camera (hence: sensor) is detected automatically, the lens used too, and the corrections are automatically applied, right?
Therefore, I will never see what I see with Nikons like the screen scapture below?
What surprises me with all those "automatic", "user-transparent" things, is that when I check the "Enable Profile Corrections" box, nothing at all whatsoever happens to the photo displayed on the screen... When I process Nikon RAWs, even when shot with an optically nearly perfect lens, such as the Zeiss 135/2, you see small changes happening, as regards for example light falloff corrections, or distortion, etc. Here, with Fuji lenses, never anything... Does that sound normal to you?
And what happens when I shoot with a Fuji X camera but, say, a Zeiss lens? Is it also detected automatically, and are corrections so applied?
Thanks in advance.