Perhaps in the pop-up editor, the names of the parameters could also show their current values on hover (where possible), so that one could debug the function l

Perhaps in the pop-up editor, the names of the parameters could also show their current values on hover (where possible), so that one could debug the function live, in a similar way to the sheet showing live numbers most of the rest of the time (with show-me formulae). Also, by doing functions like this, one could have some documentation too...