Hi Pilou,

re:
> Very useful for estimate cost, surface, volume ...etc...of something
> Seems very useful for a minimum place on the screen...

These types of uses can be handled fine by something like generating a report with that information in it. In general it's not good to display too much information all at once on the screen all the time because it contributes to making a noisy and busy UI.

Really that type of thing is better handled by a more developed instancing mechanism though and not just by having a name property that is the same on each object. It's too easy for there to be 2 different objects that have the same name and would be mistakenly counted as the same object when they are not. Instancing would ensure they are copies of a common base template.

So maybe something like that could be appropriate in the instancing UI, we'll see.

- Michael