>Hi.,]
> Thank you for your reply. Could you show me the code to do nonrecursive with the data collected in a single table just as VFP's form and etc?
>
>Thank you

John,
Take a look at UT magazine June issue for treeview. There nodes populate on demand, not with a recursion. Unfortunately I don't have a out-of-bucket good example for nonrecursive approach at the moment.
I have old prolog code but I think it would be rather cryptic.
Cetin