Feel free to delete this question if it is at the wrong place. I am reading a mathematics text in French, which wrote, in the footnote:
"N.D.E:..."
What does that mean?
I also took a screenshot.
That's a shorthand for Note de l’éditeur (editor's note) and not "Near Death Experience" ;-)
Note that the more common NDLR for Note de la rédaction has essentially the same meaning.