>>>Hilmar,
>>>
>>>I can understand that, but then you have to also shut off editing the data in one of the two forms. Just IMO I think it easier to not allow the second one to open in the first place.
>>
>>Why do you have to shut off editing? The two forms work in almost all respects as two separate users. I mean, in a multiuser system, you don't have to shut off editing for one of the users! Sure, the users should be aware that two users - or two forms - editing the selfsame record can ocassionally lead to conflicts, ocasionally forcing one of the the user to undo a few changes.
>
>Say, you open two accounts for the same person and edit address information for that person. Your first account would not show the correct information unless you implement some sort of autorefreshing...

In principle, those are the same problems as with a multi-user system, or with a single-user system using two different forms which happen to access the same data.

Of course, there is a potential conflict, but I don't think that that should hinder us to make multi-user systems, or multi-form systems.