Hello Gosei,
> 10/29 I will post my package for diff form.
> Recently I have checked it by entrance exam.of graduate course in Japan.
> Many problems are written by old style,so take many hours for transelation.
> I finished it. I will collect one tar file.
> Please some one copy it as contrib dir as diff_forms or newcartan (as dir).
Terrific. We will commit it to cvs when you post it.
All the best
Robert