I'll do that now but because I will need to touch all the element notebooks I want to decide on the message now because I won't want to change it later.
Assuming it is something I append to the element notebooks, maybe it could be something like this, e.g for
Is that any good and do you think that would assist people?
I think at the end is easier to ignore once people get it, and it isn't the first thing they will want to do even if it's new to them. I'd vote for:
It would be nice if the output of