Uwe Stöhr schrieb:
You are doing it the wrong way, IMHO. You should introduce \cfracleft and \cfracright in place of \cfracthree and give visual feedback for
>> the position of the numerator.
I think that your solution is more intuitive and I'll implement this instead the next days.
I've now reimplemented \cfrac as you proposed. Please give it a try. thanks and regards Uwe