What happen to k value when you calibrate

[meilleur102]

Hi. In the printer tab you can see the k value of the filament you are using. If I do a calibration what happen to this value?
Do I need to set it to a special value to do the calibration or it just bypass it.
And what's the default K value since I change it I don't remember the default.
Thx

Edit just saw a post with the same question.
Suggest putting the answers in the wiki where you explain the calibration.

So even if I change the k value it will always take the calibration as a primary