Wolfgang Rudolph, a host from a German computer TV show from the 1980s, still runs a YouTube channel that continues this show as Computer:Club2.
In the current video he introduces the DM42 https://youtu.be/j4D_OgDP0eg?si=sad5ZjYhpZELlBHo
Thanks for the hint. I partially watched the video and read some of the comments. Somebody was claiming the DM42 cannot find the third root of -8. I wrote a reply containing two links which was deleted shortly after. A second reply without links was removed, too
The channel's owner had nothing to do with it. Sometimes YT doesn't want links in comments, and then it refuses new comments. This happens to me frequently, and it's infuriating.
Optimot : the new keyboard layout optimized for French and English (ŵïþ tøń ỏɸ ʃʉŋ ꝃåʁăkțɛɹṩ).