Thanks for your kind words. Especially when you have several variables, speaking names are of course useful. But I think that to a loop variable an "i" fits bet

Thanks for your kind words. Especially when you have several variables, speaking names are of course useful. But I think that to a loop variable an "i" fits better than a - I don't know what ... For beginners, the one letter can be a hint that this is a variable, and the one with several letters like "len" is a keyword or a function. I once had a variable "sum" in an example program for summing up values. Some students thought this was a command to add.