I’m joining the choir of Corne-users here. I use one both at home and at work. I recently completed my PhD amd wrote the entire thing including code on a corne. Apart from the deadline induced stress it was a very pleasent experience, at least to type.

Neither, I just write a symbol.

Super Hans!

This is marvellous. Thank you. I will save this link and make my own!

Could you repeat the question?

I use LibreSudoku. It’s a very nice Sudoku app.

So, where can I find this?